YOU SAID:

i have pants and i wear them

INTO JAPANESE

私はパンツを持っているのでそれを履いています

BACK INTO ENGLISH

I have pants so I'm wearing them

INTO JAPANESE

パンツあるから履いてるよ

BACK INTO ENGLISH

I have pants so I'm wearing them.

INTO JAPANESE

パンツはあるので履いています。

BACK INTO ENGLISH

I have pants so I'm wearing them.