Question

3x+2y=4 8x+5y=9 (solve it by cross multiplication METHOD) ​

Answer 1

Answer:

x=-2 y=5

Step-by-step explanation:

multiply eq 1 by 8

and eq 2 by 3

the equation will be

24x+16y=32

24x+15y=27

now subtract eq 2 from eq 1 and you'll get your answer

Answer 2

Answer:

x = -2 and y = 5

Step-by-step explanation:

Given Equations are,

8x + 5y = 9

8x + 5y - 9 = 0 ....................(1)

3x + 2y = 4

3x + 2y - 4 = 0 .......................(2)

here,

since,  

There exist unique solution,

By cross multiplication method we get,

First Consider,

Secondly consider,

Therefore, x = -2 and y = 5