Question

they helped me out change the voice

Answer 1

I was helped out by them

Answer 2

The answer is as shown below and followed by explanation:

I was helped out by them.

Explanation

The active voice of the given sentence was in Simple Past Tense. When we convert a Simple Past Tense sentence, we use the structure was/were + Past Participle (V3). The rule of making the Subject, Object and vice versa is the same as is all the sentences.