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20 questions
Simplify
-6 + 2a + 1 + 2a
-4a + 5
-5 + 4a
4a +5
-4a - 5
5x + 3x - 9
7x - 9
17x
8x - 9
-x
8y + 5 - 2y
6y + 5
11y
10y + 5
15y
-9n + 12n + 7
28n
10n
21n + 7
3n + 7
7 - 5m - 10m
7 + 15m
7 + 5m
7 - 5m
7 - 15m
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