3x/7-1=8 - solution

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Solution for 3x/7-1=8 equation:

x in (-oo:+oo)

(3*x)/7-1 = 8 // - 8

(3*x)/7-8-1 = 0

3/7*x-9 = 0 // + 9

3/7*x = 9 // : 3/7

x = 9/3/7

x = 21

x = 21

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