x + 4y/y=7
x + 4y=7у
х=3у
[tex]\frac{2x-y}{5y} =\frac{2*3y-y}{5y} =\frac{5y}{5y} =1[/tex]
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x + 4y/y=7
x + 4y=7у
х=3у
[tex]\frac{2x-y}{5y} =\frac{2*3y-y}{5y} =\frac{5y}{5y} =1[/tex]