1. X-3Y=-6

5X+3Y=42

2. 2X-6Y=7

5X-2Y=10

3. X+16Y=9

1/4X+4Y+8

4. 3X-2Y=7

9X-6Y=14

5. 7/4X-5/2Y=2

1/4X+7/2Y=8

6. 9X-7Y=63

45X-35Y=18

7. 6X-7Y=20

3X-5Y=-7

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