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| 1. |
7x-2y/xy = 5 .....(i)8x+7y/xy=15 ....(ii) |
| Answer» i)7x-2y/xy =5=7x/xy - 2y/xy =5=7/y - 2/x =5ii)8x+7y/xy =15=8x/xy+7y/xy=15=8/y+7/x=15Let 1/x=p and 1/y=q then by substituting these values we get, 7q-2p=5 and 8q+7p=15By eliminating,q=1 and p=1; We know that 1/x=p and 1/y =q then by putting values of q and p we get x=1 and y =1. | |