Explanation:
29x - 3 + 15x + 7 = 18 because these two angles are supplementary
- 29x + 15x + 7 - 3 = 180
- 44x = 176 divide both sides by 44
- x = 4
13y - 17 = 29x - 3 because these two angles are alternate
since we know the value of x
- 13y - 17 = 29 × 4 - 3
- 13y - 17 = 113
- 13y = 113 + 17
- 13y = 130 divide both sides by 13
- y = 10