a/5-4

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Solution for a/5-4 equation: 


a in (-oo:+oo)

a/5 < -4 // + 4

a/5+4 < 0

1/5*a+4 < 0 // - 4

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

a < -4/1/5

a < -20

a in (-oo:-20)

(-oo:-20)

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