02:20 duration 2 minutes 20 seconds
Solving a word problem with two unknowns using a…
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
00:57 duration 57 seconds
Simplifying a ratio of multivariate monomials:…
Simplifying a ratio of multivariate monomials: Basic
A quick example of reducing a fraction by dividing matching factors on the top and bottom.