equivalent equations

equations that have the same solution

addition property of equality

Adding the same quantity to both sides of an equation. (If a=b, then a+c=b+c)

subtraction property of equality

Subtracting the same quantity to both sides of an equation. (If a=b, then a-c=b-c)

isolate

get the variable alone on one side of the equation

inverse operations

operations that undo each other

multiplication property of equality

Multiplying the same quantity to both sides of an equation. (If a=b, then ac=bc)

division property of equality

Dividing the same quantity to both sides of an equation. (If a=b, then a/c=b/c)