Question

(1) Add the following temperatures:
(i) -21°C and 21°C​

Answer 1

Answer:

0°C

Step-by-step explanation:

How?

See this,

-21°C and 21°C

-21°C-(-21°C)=

-21°C + 21°C=

21°C-21°C= 0°C

Mark me as the Brainliest Answer!!

Hope It Helped You!!