Question

9. x - 2y = 10, 4x + y = 13 de

Using cross multiplication​

Answer 1

Answer:

hope it helps you........

Answer 2

Answer:

9x - 2y =10 ---------- (1)

4x + y = 13 ----------(2)

2 multiply in equation( 2)-----

9x- 2y = 10

8x+2y =26

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72x = 36

x= 36/72

x =1/2

put the value of x in equation (1)

9x - 2y = 10

9× 1/2 - 2y = 10

9/2- 2y = 10

9- 4y = 90

-4y = 81

y = -81/4