3 (4x + 5) = 12 Which of the following correctly shows the beginning steps to solve this equation?
A: Step 1: 12x + 15 = 12 Step 2: 12x = - 3
B: Step 1: 12x + 5 = 12 Step 2: 12x = 7
C: Step 1: 7x + 5 = 12 Step 2: 7x = 7
D: Step 1: 7x + 8 = 12 Step 2: 7x = 4
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