4/5-4x=21/5

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Solution for 4/5-4x=21/5 equation: 


x in (-oo:+oo)

4/5-(4*x) = 21/5 // - 21/5

4/5-(4*x)-(21/5) = 0

4/5-4*x-21/5 = 0

-4*x-17/5 = 0 // + 17/5

-4*x = 17/5 // : -4

x = 17/5/(-4)

x = -17/20

x = -17/20

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