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Thumbnail for entry Solving a word problem with two unknowns using a linear equation.

02:20

Solving a word problem with two unknowns using a…

Solving a word problem with two unknowns using a linear equation.

Solving a word problem with two unknowns using a linear equation.

This shows how to represent the two unknowns using their given relationship so that a linear equation can be written using one variable. Then that equation is solved to answer the question

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From  Tom Grant 7 plays 0  
Thumbnail for entry Introduction to simplifying a sum or difference of radical expressions: Univariate

01:51

Introduction to simplifying a sum or difference…

Introduction to simplifying a sum or difference of radical expressions: Univariate

Introduction to simplifying a sum or difference of radical expressions: Univariate

Two examples of reducing radicals to then be able add or subtract like radicals

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From  Tom Grant 6 plays 0