(1+2x)/(5+4-x)/(3)=(1/15)

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Solution for (1+2x)/(5+4-x)/(3)=(1/15) equation: 


D( x )

4-x+5 = 0

4-x+5 = 0

4-x+5 = 0

9-x = 0 // - 9

-x = -9 // * -1

x = 9

x in (-oo:9) U (9:+oo)

((2*x+1)/(4-x+5))/3 = 1/15 // - 1/15

((2*x+1)/(4-x+5))/3-(1/15) = 0

((2*x+1)/(4-x+5))/3-1/15 = 0

(2*x+1)/(3*(9-x))-1/15 = 0

(15*(2*x+1))/(3*15*(9-x))+(-1*3*(9-x))/(3*15*(9-x)) = 0

15*(2*x+1)-1*3*(9-x) = 0

33*x-12 = 0

(33*x-12)/(3*15*(9-x)) = 0

(33*x-12)/(3*15*(9-x)) = 0 // * 3*15*(9-x)

33*x-12 = 0

33*x-12 = 0 // + 12

33*x = 12 // : 33

x = 12/33

x = 4/11

x = 4/11

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