-1/5a=-4

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Solution for -1/5a=-4 equation: 


a in (-oo:+oo)

(-1/5)*a = -4 // + 4

(-1/5)*a+4 = 0

4-1/5*a = 0 // - 4

-1/5*a = -4 // : -1/5

a = -4/(-1/5)

a = 20

a = 20

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