
A quick presentation of why we only add the numerators of fractions with common denominators, and then a quick example of adding two fractions with the same denominator.


This demo discusses how to set up two equations to solve the situation described, and then choose the best method to use to solve for each of the variables.


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


Some discussion of vocabulary combined with writing a simple expression from a verbal description.


Talks about how to interpret the words to create two equations, then solves them together using the elimination method, making opposites of one variable's terms sot that the equations can be…


Shows how to organize the information given in words using a chart. This allows you to use the percent formula to show how the columns are combined to then find an equation to solve for the answer,
