Which of the following expressions is correct?
a.-(-21) = 21
b. -(-21) = -21
c.-(21) = 21
d.(-21) = 21
Answers
Answered by
1
Answer:
option a
Step-by-step explanation:
because (- × - = +)
so here -(-21) = +21
Answered by
1
Answer:
a. - (-21)=21 is the answer
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