Question

1)Solve the following pair of linear equations by cross multiplication method
4x-3y-21=0
5x+2y-9=0

Answer 1

Answer:

7/4

22.5

Step-by-step explanation:

(1)

4x-3y-21=0

4x-3y=21+0

4x-3y=21

4x-y=21/3

x-y=7/4

x=7/4,y=7

7/4-7

= -5.25

I hope this one ans help you and next is

2

5 x + 2 y - 9 =0

5 x + 2 y =0+ 9

5 x + y=9 / 2

x =9 /2 *5

x=22.5

X + y =22.5+9/2

27

I hope this both answer help you