Chapter 7 Ruth, Carlajha

Operations which undo each other

when you divide each side of an equation by the same nonzero number, the 2 sides remain equal

To replace a variable with a value that results in a true sentence

if you multiply each side of an equation by the same nonzero number, the two sides remain equal

If you subtract the same from each side of an equation

a mathematical sentence showing two expression are equal. needs to have an equal sign =

A symbol of equality

the value of a variable that makes an equation true