Q. Which expression is equivalent to 21−(−8)?Choose 1 answer:(A) 21+8(B) −21+8(C) −21−8(D) −8+21
Understand Operation: Understand the operation to be performed. We need to subtract −8 from 21. In mathematical terms, subtracting a negative number is the same as adding its positive counterpart.
Perform Subtraction: Perform the subtraction by adding the opposite of −8.(1/2)−(−8)=(1/2)+8
Check Answer Choices: Check the answer choices to find the equivalent expression.The equivalent expression to (21)+8 is given in option (A).
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