11
19. x - y = 0.9,
= 1
2(x + y)
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3
Given x−y=0.9 .....................(1)
11(x+y)
−1
=2
⇒
x+y
11
=2
⇒2x+2y=11..............(2)
Multiply (1) by 2 and added
2x-2y=1.8
4x=12.8
Or x=3.2
Put velue of x in (1)
then y=x-0.9=3.2-0.9=2.3
Then x=3.2 and y=2.3
11(x+y)
−1
=2
⇒
x+y
11
=2
⇒2x+2y=11..............(2)
Multiply (1) by 2 and added
2x-2y=1.8
4x=12.8
Or x=3.2
Put velue of x in (1)
then y=x-0.9=3.2-0.9=2.3
Then x=3.2 and y=2.3
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