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soldier1979 [14.2K]
3 years ago
8

7x-5y=4; what does x and y equal

Mathematics
1 answer:
kondor19780726 [428]3 years ago
8 0
To solve for x:

7x - 5y = 4   Add 5y to both sides
       7x = 5y + 4   Divide both sides by 7
         x = \frac{5}{7}y + \frac{4}{7}
                 or
         x = \frac{5y + 4}{7}

To solve for y:

7x - 5y = 4   Subtract 7x from both sides
      -5y = -7x + 4   Divide both sides by -5
         y = \frac{7}{5}x - \frac{4}{5}
                or
         y = \frac{7x - 4}{5}
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