Question

solve by elimination method 8x- 3y = 12. 5x=2y+ 7​

Answer 1

Answer:

8x-3y=12. _______1

5x=2y+7

5x-2y=7________2

multiplying 3y to equation 2

15x-6y=21 ____3

multiplying 2y to equation 1

16x-6y=24_____4

subtracting equation 3 from 4

15x-6y=21

- 16x-6y=24

_(-)__(+)__(-)__

- x = 3

:. x= -3

substituting x= -3 in equation 3

15x-6y=21

15(-3)-6y=21

-45-6y=21

-6y=21+45

-6y= 66

y= 66/-6

y =- 11

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