Question

Which property justifies the following statement if 3x=9,then x=3.

Answer 1

Multiplication Property

Division Property

This can be justified using multiplication property and division property:

Multiplication property:

If both sides of equation:

3x = 9

are multiplied by 1/3, we have:

x = 3

Division property

Divide both sides of the equation:

3x = 9 by 3, we have:

x = 3