This video explains substitution in maths within the topic of algebra and what it means to evaluate an expression. Practice questions are at the end of the video.
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00:00 Introduction
00:22 What does substitution mean in maths?
01:14 Substitution example with one variable
02:05 Substitution example with two variables
02:37 Substitution example where a variable appears more than once
03:05 Practice questions and answers
Educational maths help videos to learn mathematics for school, exams or just general life. New videos added weekly.
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