reduce to

phrasal verb
1
to force somebody/something into a particular state or condition, usually a worse one
وادار کردن به, تنزل دادن به, تحقیر کردن به, نزول دادن به
2
to change something to a more general or simpler form
تبدیل کردن به, ساده کردن
We can reduce the problem to two main issues.