First, get rid of fractions:
2x/3 - y = 2
x + y/2 = 1 |
3 2 |
2x - 3y = 6
2x + y = 2 |
Next, multiply the second equation by (-1) to eliminate x:
2x - 3y = 6
2x + y = 2 |
(-1) |
2x - 3y = 6
-2x - y = -2 |
Adding gives -4y = 4, so that y = -1. Substituting this result into the first equation gives x = 3/2.
Thus, the (unique) solution is (3/2, -1).
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