ことに同意

agree to

→ こと
phrase Rare #20,511
agree to こと turns the preceding verb phrase into a noun-like expression, and に同意する means to agree to or consent to it. With a statement such as 君のいうこと, it can mean “agree with what someone says.”
JA: 彼女はその計画を実行することに同意した。
EN: She agreed to carry out the plan.

君のいうことに同意できない

I can't agree with what you're saying.

彼の提案を受け入れることに同意します

I agree to accept his proposal.

外科医を説得して臓器移植手術を受けることに同意させた

The surgeon persuaded me to agree to undergo an organ transplant operation.

あなたが一人で行くことに同意できない

I can't agree to you going alone.

私は彼と行くことに同意します

I agree to go with him.

彼らはその下げることに同意しなかった

They did not agree to lower the price.