add and subtract the following
1. 6b + 4c
+ 9b - 3c
12b - 8c
2. -14m - 8y
+ 20m - 9y
10m + 5y
3. 17d + 7f - 5h
+ 12d - 6f - 9h
4. -8x² + 7x +2
- 7x² + 4x -5
5. 7x² + 5x - 6
- 2x² -8x +9
1. 6b + 4c
+ 9b - 3c
12b - 8c
2. -14m - 8y
+ 20m - 9y
10m + 5y
3. 17d + 7f - 5h
+ 12d - 6f - 9h
4. -8x² + 7x +2
- 7x² + 4x -5
5. 7x² + 5x - 6
- 2x² -8x +9
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Answer:
1. 27b -7c
2. 16m -12y
3.29d +f -14h
4.-15x² +3x +7
5. 5x²+13x-15
Step-by-step explanation:
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