x+2/7=20/21 - solution

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Solution for x+2/7=20/21 equation:

x in (-oo:+oo)

x+2/7 = 20/21 // - 20/21

x+2/7-(20/21) = 0

x+2/7-20/21 = 0

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

x = 2/3

x = 2/3

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