Solve it :10/x+y+2/x-y=4and 15/x+y-5/x-y=-2
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(10/x+y)+(2/x-y)=4.......1
(15/x+y)-(5/(x-y)=-2...............2
1/(x+y)=u
1/(x-y)=v
10u+2v=4...............3 ÷2
5u+v=2..................4....×3
15u+3v=8..............5
15u-5v=-2...............6
....5.and...6.subrect we get
8v=10
v=10/8=5/4
value of v ...put 4
5u+v=2
5u+5/4=2
5u=2-5/4
u=3/4×5=3/20
1/x+y=3/20.......1
1/x-y=5/4..........2
(15/x+y)-(5/(x-y)=-2...............2
1/(x+y)=u
1/(x-y)=v
10u+2v=4...............3 ÷2
5u+v=2..................4....×3
15u+3v=8..............5
15u-5v=-2...............6
....5.and...6.subrect we get
8v=10
v=10/8=5/4
value of v ...put 4
5u+v=2
5u+5/4=2
5u=2-5/4
u=3/4×5=3/20
1/x+y=3/20.......1
1/x-y=5/4..........2
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