Mathematics

Blanche

12 May, 21:03

Jamal uses the steps below to solve the equation 6x - 4 = 8.

Step 1: 6x - 4 + 4 = 8 + 4

Step 2: 6x + 0 = 12

Step 3: 6x = 12

Step 4: =

Step 5: 1x = 2

Step 6: x = 2

Which property justifies Step 3 of his work?

A). the addition property of equality

B). the identity property of addition

C). the multiplication property of equality

D). the identity property of multiplication