Math, asked by BestStudent123, 4 hours ago

Please help me
I wil mark you as brainiest

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Answered by aanchalvansh

1

Step-by-step explanation:

a-(-b) =a+b

21-(-18)=21+18

39=39

Answered by ssri58319

1

Step-by-step explanation:

1) 39

2) 243

3) 256

4) 39

have a great day

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