Question

Please please help me with 8-11

Answer 1

8. 43

9. 90

10. 38

11. 100

Explanation:

8.

93 + (x + 44) = 180

137 + x = 180

x = 43

9.

(x + 20) + (x - 20) = 180

2x = 180

x = 90

10.

3x + (2x - 10) = 180

5x - 10 = 180

5x = 190

x = 38

11.

70 = x - 30

x = 100