Question

solve by cross multiplication method 2x+3y=12 and x-y-1=0​

Answer 1

Step-by-step explanation:

1. 2x= 12-3y
2. x = (12-3y)/2
3. now come to 2nd equation
4. use the value of x
5. (12-3y÷2) -y-1 =0
6. taking L.C.M.
7. 12-3y-2y-2 /2 = 0
8. 10-5y=0
9. -5y=-10
10. y=2
11. x=(12-3×2)/2
12. x=12-6/2
13. x=6/2
14. x= 3