Question

17. The figure shows how one path intersects another path in a park to form two angles.

Answer 1

x=42

3x+12=138

Explanation:

4x+12=180

180-12=4x

168=4x

x-42

Answer 2

x = 42

Explanation:

3x + 12 + x = 180 3x + 12

3x + x = 4x 3 x 42 + 12

4x + 12 = 180 126 + 12

- 12 -12 = 138

4x = 168

x = 42