Question

Please solve it step by step...
urgently...​

Answer 1

Answer:

Step-by-step explanation:

let 1/x+y be a and 1/x-y be b

10a+ 2b= 4 and 15a + 5b = -2

after solving two equation we get a = 12/10  and b= -8

so x= 10 /12 and y = -1/8

Answer 2

Step-by-step explanation:

Let

x+y

1

=u&

x−y

1

=v

then

(10u+2v=4)3

(15u−5v=−2)2

10u+2=4

u=

5

1

−(30u−10v=−4)

__________________

16v=16

__________________

v=1;u=

5

1

=0.2

x+y

1

=

5

1

;x+y=5

x−y

1

=1;x−y=1

x+y=5

x−y=1

_________

2x=6

_________

x=3&y=2

plz make me as brainliest.