3x=(5/4x)-21

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Solution for 3x=(5/4x)-21 equation: 


x in (-oo:+oo)

3*x = (5/4)*x-21 // - (5/4)*x-21

3*x-((5/4)*x)+21 = 0

3*x+(-5/4)*x+21 = 0

7/4*x+21 = 0 // - 21

7/4*x = -21 // : 7/4

x = -21/7/4

x = -12

x = -12

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