change sides, change signs
change sides, change signs
A mnemonic used in mathematics to remember that when adding or subtracting a value from one side of an equation, you must apply the opposite value to the other side. Well, here's the problem. You tried to solve the equation by subtracting X from both sides. If you're subtracting X from one side, you must add X to the other side. Remember—change sides, change signs!
See also: change, sign
Farlex Dictionary of Idioms.
- big things come in small packages
- package
- the best things come in small packages
- good things come in small packages
- best things come in small packages, good things come in small packages
- all the tea in China
- put (something) at
- put at
- the best things in life are free
- best things in life are free