1. Multiply both sides by 6 (the LCM of 2, 3,)
3w + 42 = 2w + 54
2. Subtract 42 from both sides
3w = 2w + 54 - 42
3. Simplify 2w + 54 - 42 to 2w + 12
3w = 2w + 12
4. Subtract 2w from both sides
3w - 2w = 12
5. Simplify 3w - 2w to w
w=12
Your answer is 12