1/2-x*2=15

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Solution for 1/2-x*2=15 equation: 


x in (-oo:+oo)

1/2-(2*x) = 15 // - 15

1/2-(2*x)-15 = 0

1/2-2*x-15 = 0

-2*x-29/2 = 0 // + 29/2

-2*x = 29/2 // : -2

x = 29/2/(-2)

x = -29/4

x = -29/4

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