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Active Practice – Systems of Equations – Elimination Method (1)
1.
x+y=1
–x + y = 5
2.
2x + y = – 3
3x – y = – 12
3.
x+y=5
x – y = –5
4.
3x + 4y = 10
6x – 4y = 8
5.
–4x – 2y = –12
4x + 8y = –24
6.
4x + 8y = 20
–4x + 2y = –30
7.
x – y = 11
2x + y = 19
8.
–6x + 5y = 1
6x + 4y = –10
9.
2x + 9y = 25
4x + 9y = 23
10.
8x + y = –16
–3x + y = –5
11.
6x – 6y = –6
6x – 3y = 12
12.
7x + 2y = 24
8x + 2y = 30
13.
x + 2y = 3
–x+y=6
14.
x+y=–2
x–y=8
15.
2x + y = –5
2x + 6y = 50
16.
x – 4y = 16
2x – 4y = 18
17.
2x + 4y = 6
3x – 4y = 2
18.
x–y=3
3x + y = 1
Answers:
1. (–2, 3)
2. (–3, 3)
3. (0, 5)
4. (2, 1)
5. (6, –6)
6. (7, –1)
7. (10, –1)
8. (–1, –1)
9. (–1, 3)
10. (–1, –8)
11. (5, 6)
12. (6, –9)
13. (–3, 3)
14. (3, –5)
15. (–8, 11)
16. (2, –
7
)
2
8 7
17. ( ,
)
5 10
18. (1, –2)
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