Question

elementary angles are (2 x- 5) degree and ( 7 x + 5) degree find the angles

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Answer 1

Answer:

Step-by-step explanation:

Supplement angle=180 degree

2x-5+7x+5=180

9x=180

x=180÷9

x=20

First angle=(2x-5)

(2×20)-5

40-5

35 degree

Second angle=(7x+5)

(7×20)+5

140+5

145 degree

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