the sum of -7mn and 12mn
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Answer:
The Correct Answer is 5mn
Step-by-step explanation:
A constant's value does not vary over time and remains the same. A variable, on the other hand, has a value that changes over time and is determined by the equation. Numbers are commonly used to denote constants. Alphabets are commonly used to represent variables.
Sum of -7mn and 12mn
- 7mn + 12mn
= 5mn
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