4/5x+1=21 - solution

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Solution for 4/5x+1=21 equation:

x in (-oo:+oo)

(4/5)*x+1 = 21 // - 21

(4/5)*x-21+1 = 0

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

4/5*x = 20 // : 4/5

x = 20/4/5

x = 25

x = 25

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