(7+x)/2+3=12

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Solution for (7+x)/2+3=12 equation: 


x in (-oo:+oo)

(x+7)/2+3 = 12 // - 12

(x+7)/2-12+3 = 0

(x+7)/2+(-12*2)/2+(2*3)/2 = 0

x-12*2+2*3+7 = 0

x-17+6 = 0

x-11 = 0

(x-11)/2 = 0

(x-11)/2 = 0 // * 2

x-11 = 0

x-11 = 0 // + 11

x = 11

x = 11

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