Question

if 10/x+y+2/x-y=4 and 15/x+y -5/x-y = -2 then 1)x=3 , y=2 2)x=3, y= -2 3)x= -3, y=2 4)x= -3, y= -2 ​

Answer 1

Answer:

Step-by-step explanation:

1/x+y=u , 1/x-y=v

10u+2v=4.........(i)

15u-5v=-2..........(ii)

multiplying( i )by 5 and and (ii) by 2 adding it both

50u+10v+(30u-10v)=20+(-4)

u=16/80

u=1/5

v=?

puuting value of u in eqn(i)

10×1/5+2v=4

2v=4-2

2v=2

v=1

now, refer to the attachment

Answer 2

Answer:

trisha has answered it correctly with detailed explanation. plzzz mark her answer as brainliest . i think there is no need to give any more solution of this question.