30x=1/2x+5(x-4)

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Solution for 30x=1/2x+5(x-4) equation: 


x in (-oo:+oo)

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

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

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

30*x-5*(x-4)-x/2 = 0

(-5*2*(x-4))/2+(2*30*x)/2-x/2 = 0

2*30*x-5*2*(x-4)-x = 0

50*x-x+40 = 0

49*x+40 = 0

(49*x+40)/2 = 0

(49*x+40)/2 = 0 // * 2

49*x+40 = 0

49*x+40 = 0 // - 40

49*x = -40 // : 49

x = -40/49

x = -40/49

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