x/3=4x/21+3

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Solution for x/3=4x/21+3 equation: 


x in (-oo:+oo)

x/3 = (4*x)/21+3 // - (4*x)/21+3

x/3-((4*x)/21)-3 = 0

x/3+(-4/21)*x-3 = 0

1/7*x-3 = 0 // + 3

1/7*x = 3 // : 1/7

x = 3/1/7

x = 21

x = 21

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