13/21x-9/7=4/7

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Solution for 13/21x-9/7=4/7 equation: 


x in (-oo:+oo)

(13/21)*x-(9/7) = 4/7 // - 4/7

(13/21)*x-(9/7)-(4/7) = 0

(13/21)*x-9/7-4/7 = 0

13/21*x-13/7 = 0 // + 13/7

13/21*x = 13/7 // : 13/21

x = 13/7/13/21

x = 3

x = 3

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