Question

24. The common solution of the linear equations
3x + 4y +11= 0 and 2x - 5y = 8'is ....​

Answer 1

Answer:

let's

3x+4y+11=0

2x-5y=8

3x+4y=-11

2x-5y=8

equation (i)× 5 & (ii)×4

15x+20y=55

8x-20y= 32

23x=87

x=87/23

put the value of x in equation (i)

3x+4y=-11

3×87/23+4y=11

4y=11-261/23

4y=-10/23

y=-10/23×1/4

y=-5/46

x=87/23

y=-5/46