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4*x-1/2 = -97/2 // + -97/2
4*x-1/2-(-97/2) = 0
4*x-1/2+97/2 = 0
4*x+48 = 0 // - 48
4*x = -48 // : 4
x = -48/4
x = -12
x = -12
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