((12-4x)+(5-7x))/2=11.5

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Solution for ((12-4x)+(5-7x))/2=11.5 equation: 


x in (-oo:+oo)

(5-(4*x)-(7*x)+12)/2 = 11.5 // - 11.5

(5-(4*x)-(7*x)+12)/2-11.5 = 0

(5-4*x-7*x+12)/2-11.5 = 0

(17-11*x)/2-11.5 = 0

(17-11*x)/2+(-11.5*2)/2 = 0

17-11*x-11.5*2 = 0

-11*x-6 = 0

(-11*x-6)/2 = 0

(-11*x-6)/2 = 0 // * 2

-11*x-6 = 0

-11*x-6 = 0 // + 6

-11*x = 6 // : -11

x = 6/(-11)

x = -6/11

x = -6/11

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