3x-21/6-x

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Solution for 3x-21/6-x equation: 


x in (-oo:+oo)

3*x-x-(21/6) = 0

3*x-x-7/2 = 0

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

2*x = 7/2 // : 2

x = 7/2/2

x = 7/4

x = 7/4

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