1/2(120-x)=40

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Solution for 1/2(120-x)=40 equation: 


x in (-oo:+oo)

(1/2)*(120-x) = 40 // - 40

(1/2)*(120-x)-40 = 0

1/2*(120-x)-40 = 0

1/2*(120-x)-40 = 0

20-1/2*x = 0

20-1/2*x = 0

20-1/2*x = 0 // - 20

-1/2*x = -20 // : -1/2

x = -20/(-1/2)

x = 40

x = 40

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