Question

Change in passive voice she can not solve this sum​

Answer 1

This sum can not be solved by her

......

Answer 2

Answer:

This sum cannot be solved by her

Explanation:

The given sentence is in future simple tense and it is also in negative.

Here, the structure of future simple tense

(subject+modal auxiliary verbs+v1+object/compliment) this is active voice sentence structure.

(New subject+modal auxiliary verbs+ be+by+New object/compliment) this is Passive voice structure of future simple tense.

If the sentence is negative we add negative forms after modal auxiliary verbs.

Finally,

She can not solve this sum.(A.V)

This sum can not be solved by her.(P.V)