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10 questions
7b + 6 - 3b + 3
10 b + 9
4b + 9
4b + 3
10b - 3
10 + 3b + b - 3
3b - 7
4b + 13
4b - 7
4b + 7
10a + 7 + 3a - 2
13a - 5
7a - 5
13a + 5
13a - 9
b + b + b + 5
8b
2b + 5
3b - 5
3b + 5
12 + 6a - 4b + 3a - 5
9a - 4b + 17
3a + 4b + 17
9a - 4b - 7
9a - 4b + 7
7xy + 2 - 3xy + 6 - 4
4xy + 12
10xy + 4
10xy - 4
4xy + 4
4d + 2d - 6 - d
6d - 6
5d - 6
7d - 6
5d + 6
15 + 8c - 5c - 8
3c + 7
13c + 7
13c - 7
3c - 7
9x + 4y - 3y + 5x + 8
14x + 7y + 8
14x - y + 8
4x + y + 8
4x + 7y + 8
10n - 3n + 5 + 4n - 2
17n + 7
11n - 3
11n + 3
17n - 7
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