Question

Plz answer the question and explain it also

Answer 1

E) 23- (-12)
23+12
35= ans
We are aware about the rules of the signs. Still am writing it here,
(++ = +)
(-- = +)
(-+ = -)
(+- = -)
By using these rules, I'd given you the ans.
Still if you have any doubt, you can ask me.
Hope it helps...