2x/21=4/7

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Solution for 2x/21=4/7 equation: 


x in (-oo:+oo)

(2*x)/21 = 4/7 // - 4/7

(2*x)/21-(4/7) = 0

(2*x)/21-4/7 = 0

2/21*x-4/7 = 0 // + 4/7

2/21*x = 4/7 // : 2/21

x = 4/7/2/21

x = 6

x = 6

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