A) 12 x - 18 = 4x + 30

x = 6

Step-by-step explanation:

You add 18 to both sides so that the equation turns into 12x = 4x + 48

Then you subtract 4x from both sides so that the equation becomes 8x = 48

Then you divide both sides by 8 and get x = 6

Answer : x=6

Step-by-step explanation:

Let's solve your equation step-by-step.

12x-18=4x+30

Step 1: Subtract 4x from both sides.

12x-18-4x=4x+30-4x

8x-18=30

Step 2: Add 18 to both sides.

8x-18+18=30+18

8x=48

Step 3: Divide both sides by 8.

8x

8

=

48

8

x=6