# Algebraic Expressions G7

21 Videos

01:04 Hours

How would you find an answer for the following given problem: 99 + _____ = 130. In Algebra, we make use of an 'Algebraic Expression', while solving these types of question. In this case, we may take the blank value as 'X' or any letter of your choice. An algebraic expression helps us to complete the chain as well as simplifies the equation. For instance, we can solve the above example as follows: 99 + X = 130, X = 130 -99, X = 31. Now we know the blank value is 31. Found this interesting, watch our videos for more such content.

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## Course Content

###### Speed of a Sound Wave and Wave Equation

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