2/5n-5=7 - solution

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Solution for 2/5n-5=7 equation:

n in (-oo:+oo)

(2/5)*n-5 = 7 // - 7

(2/5)*n-7-5 = 0

2/5*n-12 = 0 // + 12

2/5*n = 12 // : 2/5

n = 12/2/5

n = 30

n = 30

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