Answer:
x = 4
Step-by-step explanation:
Step 1: Write out equation
3x + 6 = 18
Step 2: Subtract 6 on both sides
3x = 12
Step 3: Divide both sides by 3
4
3x +6 =18
3x =18 - 6
3x =12
x =12 :3
x =4
