Question

If 3x-2y=12 and 6x+y=9, then find the value of x and y​

Answer 1

Answer:

x=2, y=-3

Step-by-step explanation:

using elimination method:

3x-2y=12____i

6x+y=9___ii

multiplying ii by 2 and then adding I and ii

18+12=12x+3x+2y-2y

30=15x

x=2

now solving i using x=2 we get:

y= -3

Answer 2

Answer:

3x-2y=12. (i)

6x + y=9. (2)

(1) x2 ->

6x-4y=24 (3)

(2)-(3)

5y=-I5. , y = -3

3x-2y=12

3x+6=12

3x = 6,x=2

Ans:x=2,y=-3