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15 questions
3x + 7x
10x
4x
-4x
-10x
3x - 7x
10x
4x
-4x
-10x
- 3x - 7x
10x
4x
-4x
-10x
- 3x + 7x
10x
4x
-4x
-10x
- 3x - (-7x)
10x
4x
-4x
-10x
3x - (-7x)
10x
4x
-4x
-10x
5a + b - 4a + b
a + 2b
a
9a - 2b
9a + 2b
5a - b - 4a + b
a + 2b
a
9a - 2b
9a + 2b
5a + b + 4a + b
a + 2b
a
9a - 2b
9a + 2b
-5a + b - 4a + b
9a + 2b
-a
9a - 2b
-9a + 2b
-3x + 7x
10x
4x
-4x
-10x
- 3x + 7x+xy
10x
4x +xy
-4x
-10x
- 3x - (-7x) +yx
10x
4x+yx
-4x
-10x
5a +-b + 4a +- b
a + 2b
a
9a - 2b
9a + 2b
-5a + b - 4a + b +c
9a + 2b +c
-a
9a - 2b-c
-9a + 2b+c
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