a/5-7=-4 - solution

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Solution for a/5-7=-4 equation:

a in (-oo:+oo)

a/5-7 = -4 // + 4

a/5-7+4 = 0

1/5*a-3 = 0 // + 3

1/5*a = 3 // : 1/5

a = 3/1/5

a = 15

a = 15

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