Question

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Answer 1

x=30 ; y=60 ; z=120.

Explanation:

(we can solve it in a system.)

z+2x=180 => z=180-2x
y+4x=180 => y=180-4x

y+z=180

4x+2x=180 => 6x=180 => x=30

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z=180-2*x=180-2*30=180-60=120

y=180-4x =180-4*30=180-120=60