Question

Please solve it friends.

Answer 1

Answer:

7-2x= 2*20=40°, 7*20=140°

Step-by-step explanation:

let number be x

2x+7x=180

9x=180

x=180/9

x=20°

2x=2*20=40°

7x=7*20=140°

Answer 2

Answer:

5.i.45°

ii. 90°

6.31°

7.40°,140°

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