Answer:
3x - 15 + x +35 =180
4x +20 =180
4x = 180- 20
4x =160
________
4
x =40
ANSWER: D. 40
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Answer:
3x - 15 + x +35 =180
4x +20 =180
4x = 180- 20
4x =160
________
4
x =40
ANSWER: D. 40