Mathematics

Kaylynn

20 October, 08:53

Consider the sequence of steps to solve the equation: 2 (x - 4) + 6x = 9x - 10

Given = 2 (x - 4) + 6x = 9x - 10

Step 1 = 2x - 8 + 6x = 9x - 10

Step 2 = 2x + 6x - 8 = 9x - 10

Step 3 8x - 8 = 9x - 10

Step 4 = 8x - 8x - 8 = 9x - 8x - 10

Step 5 = 0 - 8 = x - 10

Step 6 = - 8 = x - 10

Step 7 = - 8 + 10 = x - 10 + 10

Step 8 = 2 = x + 0

Step 9 = 2 = x

Which step in solving this equation is justified by the Distributive Property?