(4y-9)/5=(14y-9)/20

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Solution for (4y-9)/5=(14y-9)/20 equation: 


y in (-oo:+oo)

(4*y-9)/5 = (14*y-9)/20 // - (14*y-9)/20

(4*y-9)/5-((14*y-9)/20) = 0

(4*y-9)/5+(-1*(14*y-9))/20 = 0

(20*(4*y-9))/(5*20)+(-1*5*(14*y-9))/(5*20) = 0

20*(4*y-9)-1*5*(14*y-9) = 0

10*y-135 = 0

(10*y-135)/(5*20) = 0

(10*y-135)/(5*20) = 0 // * 5*20

10*y-135 = 0

10*y-135 = 0 // + 135

10*y = 135 // : 10

y = 135/10

y = 27/2

y = 27/2

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