-21/4=-3x+x+3/4

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Solution for -21/4=-3x+x+3/4 equation: 


x in (-oo:+oo)

-21/4 = x-3*x+3/4 // - x-3*x+3/4

-(-3*x)-x-21/4-(3/4) = 0

3*x-x-21/4-3/4 = 0

2*x-6 = 0 // + 6

2*x = 6 // : 2

x = 6/2

x = 3

x = 3

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