Translation guide
The English verb 'solve' is used for finding answers to problems, puzzles, mysteries, or equations. In Japanese, different verbs are used depending on what is being solved. The most common equivalent is 解決する (kaiketsu suru) for problems and issues, while 解く (toku) is used for puzzles, riddles, and math problems. This guide helps learners choose the right expression based on the object.
Expressing that a difficulty, trouble, or problematic situation is resolved.
The most common and versatile verb for solving problems, issues, or conflicts. Used in both formal and casual contexts.
その問題はすぐに解決されました。
The problem was solved immediately.
We must solve this issue.
Often used for resolving negative states like stress, anxiety, or dissatisfaction. Implies elimination or relief.
ストレスを解消する方法を教えてください。
Please tell me how to solve (relieve) stress.
Literally 'to tidy up', but can mean to settle or solve a matter, often with a nuance of finishing it off. Casual.
この件を早く片付けよう。
Let's solve this matter quickly.
Finding the answer to a puzzle, riddle, mystery, or code.
The standard verb for solving puzzles, riddles, mysteries, and codes. Also used for untying knots.
彼はその謎を解いた。
He solved the mystery.
このパズルを解くのに一時間かかった。
It took an hour to solve this puzzle.
Specifically refers to the act of solving a mystery or riddle, often used in the context of games or detective work.
謎解きゲームが好きです。
I like puzzle-solving games.
Finding the solution to a mathematical problem or equation.
Used for solving math problems, equations, and formulas. Same verb as for puzzles.
この方程式を解いてください。
Please solve this equation.
彼は難しい数学の問題を簡単に解いた。
He easily solved the difficult math problem.
Means 'to answer' or 'to give a solution', often used in academic or test contexts. More formal than 解く.
この問題に解答してください。
Please solve (answer) this problem.
Finding the perpetrator or resolving a criminal investigation.
Used for solving crimes, cases, or incidents. Often used in news or formal contexts.
警察はその事件を解決した。
The police solved the case.
Means 'to investigate', but can imply solving a crime through investigation. Not a direct translation of 'solve'.
彼らはその殺人事件を捜査している。
They are investigating (trying to solve) the murder case.
Bringing an end to a disagreement or conflict.
Standard for resolving disputes, conflicts, or arguments.
両国は平和的に紛争を解決した。
The two countries solved the dispute peacefully.
Means 'to settle' or 'to bring under control', used for calming a situation or ending a conflict.
彼が仲裁に入って争いを収めた。
He intervened and solved (settled) the dispute.
解く (toku) is used for concrete, often intellectual tasks like puzzles, math problems, and riddles. 解決する (kaiketsu suru) is used for abstract problems, issues, and conflicts. Using 解く for a social problem sounds unnatural.
For personal issues like relationship problems or life difficulties, 解決する is appropriate. 解く would sound like you are treating them as a puzzle.