1/2(2x+40)+x+x+40=180

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Solution for 1/2(2x+40)+x+x+40=180 equation: 


x in (-oo:+oo)

(1/2)*(2*x+40)+x+x+40 = 180 // - 180

(1/2)*(2*x+40)+x+x-180+40 = 0

1/2*(2*x+40)+x+x-180+40 = 0

1/2*(2*x+40)+x+x-180+40 = 0

2*x+x-180+20+40 = 0

3*x-180+20+40 = 0

3*x-160+40 = 0

3*x-120 = 0

3*x-120 = 0

3*x-120 = 0 // + 120

3*x = 120 // : 3

x = 120/3

x = 40

x = 40

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