Answer:
x = 8
Step-by-step explanation:
12x +12 = 3x +84
12x +12 -12 -3x = 3x -3x +84 -12
12x -3x = 84 -12
9x = 72
9x/9 = 72/9
Answer: Answer: x=8
12x+12=3x+84
Subtract 12 on both sides:
12x+12-12=3x+84-12
12x=3x+72
Subtract 3x on both sides:
12x-3x=3x-3x+72
9x=72
Divide 9 on both sides:
9x/9=72/9
x=8
