Question

solve the numerical expression.
a) (- 4) +4 + (-21 )+21​

Answer 1

Answer:

0

Step-by-step explanation:

(-4)+4+(-21)+21

-4+4-21+21

all will get cancel out

and the answer is 0

Answer 2

Answer:

(- 4) +4 + (-21 )+21

Step-by-step explanation:

(-4)+4=0

similarly -21 +21=0

ans:0