4/x+5y=7
3/x+4y=5
solve them by elemination method

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Solution

From the given equation, we can write
x+5y=4/7
x+4y=3/5
Subtract,
y=4/7 - 3/5 = -1/35
Substitute this in the first equation,
x+5(-1/35)=4/7
x-1/7=4/7
x=5/7

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