1/7-3(3/7n-2/7)

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


n in (-oo:+oo)

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

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

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

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

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

7-9*n = 0

(7-9*n)/7 = 0

(7-9*n)/7 = 0 // * 7

7-9*n = 0

7-9*n = 0 // - 7

-9*n = -7 // : -9

n = -7/(-9)

n = 7/9

n = 7/9

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