(180-x)/2+90-x=120

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Solution for (180-x)/2+90-x=120 equation: 


x in (-oo:+oo)

(180-x)/2-x+90 = 120 // - 120

(180-x)/2-x-120+90 = 0

(180-x)/2+(2*(-x))/2+(-120*2)/2+(2*90)/2 = 0

2*(-x)-x-120*2+2*90+180 = 0

180-3*x-240+180 = 0

180-3*x-60 = 0

120-3*x = 0

(120-3*x)/2 = 0

(120-3*x)/2 = 0 // * 2

120-3*x = 0

120-3*x = 0 // - 120

-3*x = -120 // : -3

x = -120/(-3)

x = 40

x = 40

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