3(x-1)-7=x/2

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Solution for 3(x-1)-7=x/2 equation: 


x in (-oo:+oo)

3*(x-1)-7 = x/2 // - x/2

3*(x-1)-(x/2)-7 = 0

3*(x-1)-x/2-7 = 0

(2*3*(x-1))/2-x/2+(-7*2)/2 = 0

2*3*(x-1)-x-7*2 = 0

5*x-14-6 = 0

5*x-20 = 0

(5*x-20)/2 = 0

(5*x-20)/2 = 0 // * 2

5*x-20 = 0

5*x-20 = 0 // + 20

5*x = 20 // : 5

x = 20/5

x = 4

x = 4

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