hwt1w7

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1. If x + y = 1 and x − y = 3, what are x and y?

2. To eliminate x from the following equations, ax + 2y = 4 and 3x − 2ay = −17, what do you need to multiply them by?

3. Solve 3x + 2y = 1 and 2x + 3y = −1.

4. For 2x − 3y = 1 and 3x − 2y = 4, find x and y.