Question

solve by
cross multiplication Method
3x +2y = 4
8x + 5y = 9​

Answer 1

Step-by-step explanation:

9(3x+2y)=4(8x+5y)

27x+18y=32x+20y

27x-32x=20y-18y

-5x=2y

-5x/2=y

Answer 2

Answer:

x = -2 and y = 5

Step-by-step explanation:

Given Equations are,

8x + 5y = 9

8x + 5y - 9 = 0 ....................(1)

3x + 2y = 4

3x + 2y - 4 = 0 .......................(2)

here,

since,  

There exist unique solution,

By cross multiplication method we get,

First Consider,

Secondly consider,

Therefore, x = -2 and y = 5