Question

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?

Answer 1

"if equals are divided by equals, the results are equal." This is a corollary of the distributive property for multiplication.