Question

7. Find the value of x and y (7x -15) (3y +12) (4x +45)​

Answer 1

Answer:

The given equations are,

2x+3y=24 ....(1)

2x−3y=12 ....(2)

Adding Equations (1) and (2), we get

2x+3y+2x−3y=24+12

⇒4x=36

⇒x=9

Putting x=9 in Equation (1), we get

2×9+3y=24

⇒18+3y=24

⇒3y=6

⇒y=2

Thus xy=9×2=18