add or subtract.write each answer units simplest form 1) 7+1 9+8
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Answered by
2
Answer:
- 25
- -9
Step-by-step explanation:
1. (7+1)+(9+8)
=8+9+8
=8+8+9
=16+9
=25
2. (7+1)-(9+8)
=8-17
=-9
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