-1=-4/7n

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Solution for -1=-4/7n equation: 


n in (-oo:+oo)

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

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

(4/7)*n-1 = 0

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

4/7*n = 1 // : 4/7

n = 1/4/7

n = 7/4

n = 7/4

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