Find the value of x.
a) 71
b) 72
c) 73
d) 75

146° + (-39 +x)° = 180°

Subtract 146° on both sides.

(-39 +x)° = 180° - 146°

(-39 +x)° = 34°

(x - 39)° = 34°

Add 39° on both sides

x = 34° + 39°

x = 73°

Your final answer is C) 73.

146 - 39 + x = 180

107 + x = 180

x = 73

Your answer is C) 73.

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