Question

If a = -21, b= 10, c = -5. Verify that a + (b+c) = (a+b) +e​

Answer 1

Answer

16=26

Step-by-step explanation:

a+(b+c)=(a+b)+c

21+(10+(-5)=(21+10)+(-5)

first we should do 10+(-5)=(21+10)

21+(-5)=31+(-5)

21-5=31-5

16=2e

Answer 2

Answer:

E=-5

Step-by-step explanation:

-21+(10+(-5))=(-21+10)+e

-21+(10-5)= - 11+e

-21+5= - 11+e

-16=-11+e

-16+11=e

-5=e

Or

e=-5

(Also there is typing mistake in your question, there must have been 'c' at the place of 'e', the solution us according to 'e').