Answer:
x = -3
Step-by-step explanation:
12x + 3 = 6x - 15
Step 1: Subtract 3 from both sides
12x + 3 - 3 = 6x - 15 - 3
Step 2: Simplify
12x = 6x - 18
Step 3: Subtract 6x from both sides
12x - 6x = 6x - 18 - 6x
Step 4: Simplify
6x = -18
Step 5: Divide both sides by 6
6x/6 = -18/6
6x/6 --> x -18/6 --> -3
Answer: X = -3
