1/2(12+x)=3/5(5x-15)

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Solution for 1/2(12+x)=3/5(5x-15) equation: 


x in (-oo:+oo)

(1/2)*(x+12) = (3/5)*(5*x-15) // - (3/5)*(5*x-15)

(1/2)*(x+12)-((3/5)*(5*x-15)) = 0

(1/2)*(x+12)+(-3/5)*(5*x-15) = 0

1/2*(x+12)-3/5*(5*x-15) = 0

1/2*(x+12)-3/5*(5*x-15) = 0

15-5/2*x = 0

15-5/2*x = 0

15-5/2*x = 0 // - 15

-5/2*x = -15 // : -5/2

x = -15/(-5/2)

x = 6

x = 6

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