solve plz by elimination method 4x+9y=30xy and 5y – 3x = xy Question solve plz by elimination method 4x+9y=30xy and 5y – 3x = xy in progress 0 Math Piper 4 months 2022-01-06T19:02:55+00:00 2022-01-06T19:02:55+00:00 1 Answer 0 views 0

## Answers ( )

Answer: 4x+9y=30xy——1

5y-3x=xy———–2

Step-by-step explanation:multiplying eqyuation 2 by 4 and equation 1 by 3

Thus we get the equations

12x+27y=90xy

20y-12x=4xy

On adding these equations we get

12x+27y=90xy

-12x+9y=4xy

Thus on adding we get 0+36y=94xy

Thus 36y=94xy

y=94/36

y=47/18

Substituting y in equation 4x+9×47/18=30×47/18

4x+47/2=15×47/9

4x=709/9-47/2

4x=995/18

x=995/18×4

x=995/72