4/9(x+1)=5/9y

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Solution for 4/9(x+1)=5/9y equation: 


x in (-oo:+oo)

(4/9)*(x+1) = (5/9)*y // - (5/9)*y

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

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

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

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

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

4*x-5*y+4 = 0

(4*x-5*y+4)/9 = 0

(4*x-5*y+4)/9 = 0 // * 9

4*x-5*y+4 = 0

4*x-5*y+4 = 0 // - 4-5*y

4*x = -(4-5*y) // : 4

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

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

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