31=5x+4/7x-8

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Solution for 31=5x+4/7x-8 equation: 


x in (-oo:+oo)

31 = 5*x+(4/7)*x-8 // - 5*x+(4/7)*x-8

8-(5*x)-((4/7)*x)+31 = 0

(-4/7)*x-5*x+8+31 = 0

39-39/7*x = 0 // - 39

-39/7*x = -39 // : -39/7

x = -39/(-39/7)

x = 7

x = 7

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