Question

a. 42 - 21 = 21 - 42​

Answer 1

Answer:

it is wrong

Step-by-step explanation:

42-21=21

21-42=(-21)

please mark as brainliest answer if you think it is usefull

Answer 2

Answer:

it isn't equal

it's equal to 84=42

I hope you will satisfy from my answer

Thank you