To Match
する verb
You do one do and I'll do another do. I'll do the same thing to match it.
いっちする
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own. The いち is shortened to いっ.
偽のベーコンに残された指紋は、マミのものと一致しました。
The fingerprints left on the fake bacon matched Mami’s.