If we choose c to be the additive inverse of a term, we can add or subtract it from both sides of the equation, and take steps to
isolate the variable term.
3 + x = 5
3 − 3 + x = 5− 3
x = 2
Solving Linear Equations
The multiplicative property of equality:
If a = b, then ac = bc
If we choose c to be the multiplicative inverse of a term, we can
multiply both sides of the equation by the multiplicative inverse
and “get rid of” or ”divide out” a coefficient on the variable we are
trying to isolate.