(x-1)/2+8=12

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Solution for (x-1)/2+8=12 equation: 


x in (-oo:+oo)

(x-1)/2+8 = 12 // - 12

(x-1)/2-12+8 = 0

(x-1)/2+(-12*2)/2+(2*8)/2 = 0

x-12*2+2*8-1 = 0

x-25+16 = 0

x-9 = 0

(x-9)/2 = 0

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

x-9 = 0

x-9 = 0 // + 9

x = 9

x = 9

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