3x/5x=4/5x

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Solution for 3x/5x=4/5x equation: 


x in (-oo:+oo)

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

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

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

3/5*x^2-4/5*x = 0

DELTA = (-4/5)^2-(0*3/5*4)

DELTA = 16/25

DELTA > 0

x = ((16/25)^(1/2)+4/5)/(3/5*2) or x = (4/5-(16/25)^(1/2))/(3/5*2)

x = 4/3 or x = 0

x in { 0, 4/3 }

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