Answer:
Step-by-step explanation:
The lines are parallel.
Therefore
3x + 6 = 4x - 12 Add 12 to both sides
3x + 6 + 12 = 4x Combine
3x + 18 = 4x Subtract 3x from both sides.
18 = 4x - 3x
18 = x
the ans is given.the ans is 18.
