-1/7x=4

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Solution for -1/7x=4 equation: 


x in (-oo:+oo)

(-1/7)*x = 4 // - 4

(-1/7)*x-4 = 0

-1/7*x-4 = 0 // + 4

-1/7*x = 4 // : -1/7

x = 4/(-1/7)

x = -28

x = -28

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