a-(-b)=a+b a=18 b=21
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Answered by
0
Answer:
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Step-by-step explanation:
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Answered by
2
Answer:
18+21=29 it is a simple question do now that
here is the explanation
Step-by-step explanation:
a=18
b=21
since,
a-(-b) =a+b
= 18+21
=39
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