6x + 20 = 156-16

Solution:

• Simplify the right side: 156 − 16 = 140
• So 6x + 20 = 140
• Subtract 20: 6x = 120
• Divide by 6: x = 20

Verification: 6(20) + 20 = 120 + 20 = 140, which matches 156 − 16 = 140.