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[문자와 식] 이야기로 배우는 일차 방정식
수학동아 2018.12.28 00:22 조회 1986
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방정식이란 미지수에 따라 참이 되기도 하고, 거짓이 되기도 하는 등식을 말한다. 방정식은 미지수의 차수와 개수에 따라 서로 다른 이름으로 불리는데, ‘(일차식)=0’의 꼴로 나타낼 수 있는 미지수가 1개인 방정식을 ‘일차방정식’이라고 부른다. 일차방정식은 비교적 간단하게 식을 세워 해를 구하기 때문에, 생활 속 곳곳에서 쉽게 그 원리를 만날 수 있다. 생활 속에서 방정식을 익혀 보자.

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