Question

1. x + y = 8,
2x-3y=1.
Solve by cross multiplication
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Answer 1

Answer:

x. . = -y. = 1.

1 -8.(-) 1. -8(-). 1. 1(-)

-3. -1. 2. -1. 2. -3

x. = -y. = 1.

-1-24. -1+16. -3-3

x. = -y. = 1.

-25 15. -6

therefore, x. = 1.

-25. -6

x= -25. = 25/6

x= -25. = 25/6 -6

-y. = 1.

15. -6

-y =. -15. = 15/6= 5/2

-y =. -15. = 15/6= 5/2 -6