RouQian RouQian

07-06-2014
Mathematics

contestada

8x=10y
2x-y=5
solve x and y

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konrad509 konrad509

07-06-2014

[tex]8x=10y\\ 2x-y=5\\\\ 4x=5y\\ y=2x-5\\\\ 4x=5(2x-5)\\ 4x=10x-25\\ 6x=25\\ x=\frac{25}{6}\\\\ y=2\cdot\frac{25}{6}-5\\ y=\frac{25}{3}-\frac{15}{3}\\ y=\frac{10}{3} [/tex]

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