Question

please answer the 8 question ​

Answer 1

Answer:

as we know

that they are forming linear pair so,

x+x+20+x+31=180°

3x+51=180°

x=180°-51°/3

x=129/3

×=43°

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Answer 2

Step-by-step explanation:

solve:.x+31+x+20+x=180

=3x+51=180

=3x=180-51

=3x=129

=x=129/3

=x=43 is the correct answer

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