Question

$8x - 3y = 12 : 5x = 2y + 7 solve by cross multiplication method$
​

Answer 1

Answer:

$8x - 3y = 12 \\ \\ 5x - 2y = 7 \\ \\ 2 \times (8x - 3y = 12) - 3(5x - 2y = 7) \\ \\ \\ x = 3 \: so \: y \: = 4$

Answer 2

Answer.

we have

8x- 3y=12..........(1)

5x=2y+7.............(2)

so ,

(1)×2 - (2)×3

(16x-15x)-(6y-6y)=24-21

X= 3

,so ,put in (1)

8×3+3y=12

-3 y= 12-24

y= 4 ,