3x=21/7

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Solution for 3x=21/7 equation: 


x in (-oo:+oo)

3*x = 21/7 // - 21/7

3*x-(21/7) = 0

3*x-3 = 0

3*x-3 = 0 // + 3

3*x = 3 // : 3

x = 3/3

x = 1

x = 1

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