1/2x-2/5x=3/4

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Solution for 1/2x-2/5x=3/4 equation: 


x in (-oo:+oo)

(1/2)*x-((2/5)*x) = 3/4 // - 3/4

(1/2)*x-((2/5)*x)-(3/4) = 0

(1/2)*x+(-2/5)*x-3/4 = 0

1/10*x-3/4 = 0 // + 3/4

1/10*x = 3/4 // : 1/10

x = 3/4/1/10

x = 15/2

x = 15/2

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