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## Answers

7x-8y=11 8x-7y=7

* 7 * -8

49x-56y=77 -64x+56y= -56

On subtracting we get,

- 15x= 21

x= 21/ -15

x= - 7/5

7* -7/5 - 8y =11

-49/5 - 8y=11

-8y = 104/5

y= -51/20

from(1) 8x=(7+7y) or x=(7+7y)/8--------(2)

7[(7+7y)/8]-8y-11=0

=>(49+49y)/8-8y-11=0

=>49+49y-64y-88=0

=>-39-15y=0

=>y=-39/15-------(3)

put this value in (2) to get the value of x.