Question

find x&y -5/x+y -2/x-y+ 1=0 ,15 /x+y +7/x-y-10=0​

Answer 1

Answer:

Step-by-step explanation:

Putting 1(x+y)=uand1(x−y)=v, we get

5u−2v+1=0and15u+7v−10=0.

Now, solve for u and v.

let 1/x=u and 1/x-y=v

5u-2v+1=0-------consider equ (1)

15u+7v-10=0----consider eq (2)

by elimination method

we get

-13v+13=0

13v=13

v=1

5u-2v=-1

5u-2(1)=-1

5u=1

u=1/5

1/(x+y)=1/5 1/(x-y)=1

x+y=5 ,x-y=1

by evaluation

2x=6

x=3 and y=5-x

y=5-3=>2

I hope it may helpfull to you

Mark me as a BRILLIANT