-x+3/7=23/21

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Solution for -x+3/7=23/21 equation: 


x in (-oo:+oo)

3/7-x = 23/21 // - 23/21

3/7-x-(23/21) = 0

3/7-x-23/21 = 0

-x-2/3 = 0 // + 2/3

-x = 2/3 // * -1

x = -2/3

x = -2/3

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