1/2(5x+4)-1/2(x+7)=7

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Solution for 1/2(5x+4)-1/2(x+7)=7 equation: 


x in (-oo:+oo)

(1/2)*(5*x+4)-((1/2)*(x+7)) = 7 // - 7

(1/2)*(5*x+4)-((1/2)*(x+7))-7 = 0

(1/2)*(5*x+4)+(-1/2)*(x+7)-7 = 0

1/2*(5*x+4)-1/2*(x+7)-7 = 0

1/2*(5*x+4)-1/2*(x+7)-7 = 0

2*x-7-3/2 = 0

2*x-17/2 = 0

2*x-17/2 = 0

2*x-17/2 = 0 // + 17/2

2*x = 17/2 // : 2

x = 17/2/2

x = 17/4

x = 17/4

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