1-2a-1/2=-3

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Solution for 1-2a-1/2=-3 equation: 


a in (-oo:+oo)

1-(2*a)-(1/2) = -3 // + 3

1-(2*a)-(1/2)+3 = 0

1-2*a-1/2+3 = 0

7/2-2*a = 0 // - 7/2

-2*a = -7/2 // : -2

a = -7/2/(-2)

a = 7/4

a = 7/4

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