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ICSE Class 8 Answered

Solve: 4/x + 5/y = 3 ; 6/x - 10/y = 1
Asked by justjasonpong | 13 Nov, 2018, 05:25: PM
answered-by-expert Expert Answer
sub 1/x=u, 1/y=v
4u + 5v = 3 .....(1)
6u - 10v = 1.....(2)
(1)×2
8u + 10v = 6.....(3)
(3)+(2)
14u=7
u=1/2............x=2
v=1/5..........y=5
Answered by Arun | 14 Nov, 2018, 10:36: AM
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