Question

plz answer it fast don't spam❌ otherwise it will be reported
it's answer should be -21
but I don't know to solve pls help me out​

Answer 1

Answer:

0

Step-by-step explanation:

0 is the additive identity of every number

The additive identity is a number which if you add to ANY number will result in that number itself

Therefore, -21 + 0

= 0

Answer 2

Answer:

Thank you

see the steps

Hope it is helpful