Solving an equality in 2 variables
158844
If $a$ and $b$ are positive real numbers such that $a+b=1$, prove that $(a+1/a)^2+(b+1/b)^2\ge 25/2$
61533
Solution af a system of 2 quadratic equations
3528
How to check if a variable is the same as at least one of two other variables?
156266
Solving $|x-2| + |x-5|=3$
87029
Solve $y^2=x^3-4$ in $x,y\in \mathbb{Z}$
91003
Prove that equation has exactly 2 solutions
140086
Does $3-4+1$ equal $0$ or $-2$.. or maybe $2$?
90853
How can I compare multiple variables to a single condition?
150756
Equality of integrals
38849
Solve $x^y \, = \, y^x$
15025
Solve $xu_x+(x+y)u_y=1$ when $u(1,y)=y$
139474
Solving system of Congruences with Two Variables (x and y)
124581
Solving $x^2 - 1 = e^x$
128425
How to obtain numerical solutions of a two-variable equation?
377
Problem involving many squares and several variables.
1208
How to test multiple variables against a single value?
114270
How do I solve this equation?