From my research the answer for this question is 5
Answer:
-360
Step-by-step explanation:
1. Add 9 + 21 and subtract 9 - 21
2. That would be (30)(-12)
3. Then multiply 30 x -12
4. You get -360
Answer:

As this value is definite (has an end), it would be considered rational.
Answer:
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