how to add and subtract compound fractions?
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['Find the Least Common Denominator (LCD)', 'Find the equivalent fractions.', 'Add or subtract the fractions and add or subtract the whole numbers.', 'Write your answer in lowest terms.']
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Here's the easy way to subtract fractions that have different denominators: Cross-multiply the two fractions and subtract the second number from the first to get the numerator of the answer. After you cross-multiply, be sure to subtract in the correct order.
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['Divide the top of the fraction by the bottom,', 'Then multiply the result by 100 and read off the answer !']
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['Check to see if the fractions have the same denominator.', "If they don't have the same denominator, then convert them to equivalent fractions with the same denominator.", 'Once they have the same denominator, add or subtract the numbers in the numerator.', 'Write your answer with the new numerator over the denominator.']
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The steps are the same whether you're adding or subtracting mixed numbers: Find the Least Common Denominator (LCD) Find the equivalent fractions. Add or subtract the fractions and add or subtract the whole numbers.
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['Find the least common denominator of all the fractions in the equation.', 'Multiply both sides of the equation by that LCD. ... ', 'Isolate the variable terms on one side, and the constant terms on the other side.', 'Simplify both sides.']
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Subtracting a Mixed Number From a Whole Number: Fraction Series - learn how to subtract a mixed number from a whole number. Method: convert the top number into fraction form; subtract the whole numbers; subtract the numerators; keep the denominator.
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['Adding Fractions,', 'Subtracting Fractions,', 'Multiplying Fractions and.', 'Dividing Fractions.']
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Step 1: Find a common denominator If your denominators are different, you're adding fractions with unlike denominators. When adding unlike fractions, you need to find a common denominator so you can add the two fractions together.
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['Add or Subtract the same value from both sides.', 'Clear out any fractions by Multiplying every term by the bottom parts.', 'Divide every term by the same nonzero value.', 'Combine Like Terms.', 'Factoring.', 'Expanding (the opposite of factoring) may also help.']
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To do this, you need to find the least common multiple (LCM) of the two denominators. To subtract fractions with unlike denominators, rename the fractions with a common denominator. Then subtract and simplify.
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['Put the numbers in a vertical column aligning the decimal points.', 'Subtract each column, starting on the right and working left. ... ', 'Place the decimal point in the answer directly below the decimal points in the terms.', 'Check the answer by adding.']
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Note: The rules for adding and subtracting improper fractions are the same as working with proper fractions. Step 1: Keep the denominator the same. Step 2: Add or subtract the numerators. Step 3: If the answer is an improper form, reduce the fraction into a mixed number.
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['First, keep the first number (known as the minuend).', 'Second, change the operation from subtraction to addition.', 'Third, get the opposite sign of the second number (known as the subtrahend)', 'Finally, proceed with the regular addition of integers.']
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To find the difference of two fractions with different denominators, rewrite the fractions with a common denominator before subtracting. Here is a subtraction problem. The fractions in this problem have different denominators, 8 and 4. Rewrite the fractions so they share a common denominator.
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Like fractions are fractions with the same denominator. You can add and subtract like fractions easily - simply add or subtract the numerators and write the sum over the common denominator.
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['Find the lowest common multiple of the denominators.', 'Express all fractions in terms of the lowest common denominator.', 'Simplify the numerators to obtain the numerator of the answer.']