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CBSE Class 10 Answered

10/x+y+2/x-y=4; 15/x+y+5/x-y=-2
Asked by Sumesh14341 | 05 May, 2018, 08:38: PM
answered-by-expert Expert Answer
Let x + y = u and x - y = v
then equations are 
10/u + 2/v = 4 and 15/u + 5/v = -2
Solving simultaneously both the equations we get
u = 10/3 = x + y
and v = 2 = x - y
x + y = 10/3 ......(i)
and x - y = 2 ......(ii)
Adding above equations 
2x = 16/3
x = 8/3 
Find y putting x = 8/3 in (i)
we get y = 2/3
Answered by Sneha shidid | 07 May, 2018, 12:37: PM

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