2x/m=4r/n

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Solution for 2x/m=4r/n equation: 


x in (-oo:+oo)

(2*x)/m = (4*r)/n // - (4*r)/n

(2*x)/m-((4*r)/n) = 0

(2*x)/m-4*n^-1*r = 0

2*m^-1*x-4*n^-1*r = 0 // + -4*n^-1*r

2*m^-1*x = -(-4*n^-1*r) // : 2*m^-1

x = (-(-4*n^-1*r))/(2*m^-1)

x = 2*m*n^-1*r

x = 2*m*n^-1*r

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