ほどく
解く
hodoku

Godan Verb (ku)

1. to undo; to untie; to unfasten; to unlace; to unravel; to loosen; to unpack

Transitive
Usually Written in Kana
これらのずつみをほどくのを手伝てつだってください。
korerano tsutsumio hodoku nō tetsudatte kudasai.
Lend a hand with these parcels, please.