(90° - x) =1/3 (180°-x)
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Answer:
x in (-oo:+oo)
90-x = (1/3)*(180-x) // - (1/3)*(180-x)
90-((1/3)*(180-x))-x = 0
(-1/3)*(180-x)-x+90 = 0
90-1/3*(180-x)-x = 0
90-1/3*(180-x)-x = 0
90-2/3*x-60 = 0
30-2/3*x = 0
30-2/3*x = 0
30-2/3*x = 0 // - 30
-2/3*x = -30 // : -2/3
x = -30/(-2/3)
x = 45
x = 45
Step-by-step explanation:
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