Constructing equations from proportions to solve problems | Algebra Basics | Khan Academy
44We're putting some nifty thinking to work as we use proportions to create equations which then tell us how much tip to leave for dinner. Created by Sal Khan.
Watch the next lesson: https://www.khanacademy.org/math/algebra-basics/core-algebra-linear-equations-inequalities/ratios-core-algebra/v/ratio-problem-with-basic-algebra-new-hd?utm_source=YT&utm_medium=Desc&utm_campaign=algebrabasics
Missed the previous lesson? https://www.khanacademy.org/math/algebra-basics/core-algebra-linear-equations-inequalities/ratios-core-algebra/v/proportions-2-exercise-examples?utm_source=YT&utm_medium=Desc&utm_campaign=algebrabasics
Algebra basics on Khan Academy: Topics covered in a traditional college level introductory macroeconomics course
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