Question

Ch - Lines and angles, problem in finding the correct way to take the answer out.

Pls tell the correct step for the following.
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Answer 1

Answer:

this is the correct answer of this question

Answer 2

Step-by-step explanation:

(3x -7) +( x+20) + 55= 180

3x-7+x+20+55 = 180

4x -7+75=180

4x +68= 180

4x = 180 - 68

4x = 112

x = 112/4

x = 28

I hope you are satisfied from my answer