Question

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Answer 1

130

Explanation:

You have to make this question into an equation. So let the equation be x+8=138. Then you subtract 8 from both sides. Bring down the x and you'll get your answer.

`x + 8 = 138\\ -8 -8\\x = 130`

Answer 2

The sum of these two angles is 180°, therefore,

138° + (x + 8)° = 180°.

Simplify the left side of the equation.

146° + x = 180°.

Subtract 146 from both sides.

x = 34°