Question

x-y=0.9
11/2(x+y)=1
x=?
y=?

Answer 1

Hope I hv understood ur problem and solved it correctly...

Answer 2

x-y=9/10_____(I)

x+y=2/11_____(II)

On adding both equations,,

hence,,

x-y=9/10

x-y=2/11

__________

2x=(99+20)/110

=>2x=119/110

=>x=119/(110×2)

=>x=119/220

the value of x keeping on equation (I)..

hence,,

119/220-y=9/10

=>y=(119/220)-(9/10)

=>y=(119-198)/220

=>y=-79/220
The value of x=119/220
& the value of y=-79/220

Check,,
x-y=0.9
LHS=(119/220)-(-79/220)
=(119/220)+(79/220)
=(119+79)/220
=198/220
=18/20
=9/10
=0.9 =RHS,,proved..

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