Question

Evaluate :-
30-(-21)​

Answer 1

Step-by-step explanation:

51is the answer of this....

Answer 2

Answer:

51

Step-by-step explanation:

30 -(-21)

= 30 + 21 [because (-)(-) = (+)]

= 51

To solve more questions like this. Remember :-

• (-)(-) = (+)
• (-)(+) = (-)
• (+)(-) = (-)
• (+)(+) = (+)

hope it helps.