4/5a=-20 - solution

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Solution for 4/5a=-20 equation:

a in (-oo:+oo)

(4/5)*a = -20 // + 20

(4/5)*a+20 = 0

4/5*a+20 = 0 // - 20

4/5*a = -20 // : 4/5

a = -20/4/5

a = -25

a = -25

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