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数学数学117 views·Updated Jun 20, 2026·1 page

簡単な一次方程式の解き方ガイド

一次方程式の解き方を覚えれば、数学のテストで確実に点数を取れるようになるよ。バランスの取れた天秤のように、方程式の両辺に同じ操作をしていけば、必ず答えにたどり着けるんだ。

1
of 1
# 一次方程式の解き方

1. 概要

一次方程式は、ある未知数(通常は変数)を含む方程式で、その未知数の値を求めることを目的とします。通常、未知数を表す記号は$x$で表されます。一次方程式は、変数の次数が1であるため、グラフにすると直線になります。一次方程式を解くことは、その直

一次方程式の基本と解き方

一次方程式って聞くと難しそうだけど、実はパズルを解くのと同じなんだ。xという謎の数を見つけるゲームだと思ってみよう!

一次方程式には大切な要素が3つある。変数(普通はx)、定数(分かっている数)、係数(変数にかけられている数)だ。これらを使って、xがいくつなのかを見つけていくよ。

解くときの基本ルールは「方程式のバランスを保つ」こと。天秤の片方に重りを乗せたら、もう片方にも同じ重さを乗せるよね。方程式も同じで、左辺に何かしたら右辺にも同じことをするんだ。

基本の手順は4つ:①変数を片側に集める、②定数を反対側に移す、③変数の係数で割る、④最後に検証する。例えば2x + 3 = 7なら、両辺から3を引いて2x = 4、両辺を2で割ってx = 2となる。

💡 コツ: 方程式は天秤だと覚えよう!両辺に同じことをすれば必ず解ける。

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Most popular content in 数学

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Most popular content

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4.6/5App Store
4.7/5Google Play

The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.

Stefan SiOS user

This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.

Samantha KlichAndroid user

Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.

AnnaiOS user

数学数学117 views·Updated Jun 20, 2026·1 page

簡単な一次方程式の解き方ガイド

一次方程式の解き方を覚えれば、数学のテストで確実に点数を取れるようになるよ。バランスの取れた天秤のように、方程式の両辺に同じ操作をしていけば、必ず答えにたどり着けるんだ。

1
of 1
# 一次方程式の解き方

1. 概要

一次方程式は、ある未知数(通常は変数)を含む方程式で、その未知数の値を求めることを目的とします。通常、未知数を表す記号は$x$で表されます。一次方程式は、変数の次数が1であるため、グラフにすると直線になります。一次方程式を解くことは、その直

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一次方程式の基本と解き方

一次方程式って聞くと難しそうだけど、実はパズルを解くのと同じなんだ。xという謎の数を見つけるゲームだと思ってみよう!

一次方程式には大切な要素が3つある。変数(普通はx)、定数(分かっている数)、係数(変数にかけられている数)だ。これらを使って、xがいくつなのかを見つけていくよ。

解くときの基本ルールは「方程式のバランスを保つ」こと。天秤の片方に重りを乗せたら、もう片方にも同じ重さを乗せるよね。方程式も同じで、左辺に何かしたら右辺にも同じことをするんだ。

基本の手順は4つ:①変数を片側に集める、②定数を反対側に移す、③変数の係数で割る、④最後に検証する。例えば2x + 3 = 7なら、両辺から3を引いて2x = 4、両辺を2で割ってx = 2となる。

💡 コツ: 方程式は天秤だと覚えよう!両辺に同じことをすれば必ず解ける。

We thought you’d never ask...

What is the Knowunity AI companion?

Our AI Companion is a student-focused AI tool that offers more than just answers. Built on millions of Knowunity resources, it provides relevant information, personalised study plans, quizzes, and content directly in the chat, adapting to your individual learning journey.

Where can I download the Knowunity app?

You can download the app from Google Play Store and Apple App Store.

Is Knowunity really free of charge?

That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.

Most popular content in 数学

9

Most popular content

9

Can't find what you're looking for? Explore other subjects.

Students love us — and so will you.

4.6/5App Store
4.7/5Google Play

The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.

Stefan SiOS user

This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.

Samantha KlichAndroid user

Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.

AnnaiOS user