YOU SAID:

My pants are too long by about 7 1/2 inches

INTO JAPANESE

私のズボンが約 7 1/2 インチでは長すぎます。

BACK INTO ENGLISH

My pants were about 7 1 / 2 inch, length too.

INTO JAPANESE

私のズボンが約 7 1/2 インチ、長さも。

BACK INTO ENGLISH

My pants were about 7 1/2 inch, length.

INTO JAPANESE

私のズボンはいた約 7 1/2 インチ、長さです。

BACK INTO ENGLISH

My pants were about 7 1 / 2 inches.

INTO JAPANESE

私のズボンが約 7 1/2 インチ。

BACK INTO ENGLISH

My pants were about 7 1 / 2 inches.