1/2-2x=-4 - solution

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Solution for 1/2-2x=-4 equation:

x in (-oo:+oo)

1/2-(2*x) = -4 // + 4

1/2-(2*x)+4 = 0

1/2-2*x+4 = 0

9/2-2*x = 0 // - 9/2

-2*x = -9/2 // : -2

x = -9/2/(-2)

x = 9/4

x = 9/4

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