1.

5/x-1+8/y+1=9;4/x-1+6/y+1=7​

Answer»

Step-by-step explanation:

  • 5/x-1+8/y+1=9
  • cross multiply
  • 5(y+1)+8(x-1)=9
  • 5y+5+8x-8=9
  • 8x+5y-3=9
  • 8x+5y=9
  • 8x+5y=12
  • 8x=12-5y
  • x=12-5y/8. PUT in EQUATION 2


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