5/4x-2/5x-13=21

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Solution for 5/4x-2/5x-13=21 equation: 


x in (-oo:+oo)

(5/4)*x-((2/5)*x)-13 = 21 // - 21

(5/4)*x-((2/5)*x)-21-13 = 0

(5/4)*x+(-2/5)*x-21-13 = 0

17/20*x-34 = 0 // + 34

17/20*x = 34 // : 17/20

x = 34/17/20

x = 40

x = 40

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