決める前に

before deciding

→ 決める
phrase Rare #22,027
before deciding 決める means “to decide,” and 前に means “before.” The phrase is followed by the action or situation that happens before a decision is made.
JA: 旅行先を決める前に、予算を確認しましょう。
EN: Let's check the budget before deciding where to travel.

決める前にこのことを妻と相談したいんです

I’d like to discuss this with my wife before deciding.

買うのを決める前に似合うかどうかそのジャケット試着してみた

Before deciding whether to buy it, I tried on the jacket to see if it suited me.

決める前に家族と相談したいのですが

I'd like to discuss it with my family before making a decision.

決める前にこの問題をあらゆるから考えてみよう

Let's consider this issue from every angle before making a decision.

決める前に私の顔をご覧になりたい

Would you like to see my face before deciding?

— ラストエンペラー (1987)