Question

Please answer question 4

Answer 1

Answer:

Step-by-step explanation:

Let the angle be x

You also

Take

3(180-x) - x = 20

540-3x -x =20

-4x= -520

x= 520/4

x=130°

Answer 2

Thrice of supplement

x+3x- 20 =180

4x =180+ 20

4x =200

x=200÷4

50

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