Search for tag: "substitution"

Solving a word problem involving a sum and another basic relationship using a system of lineaer equations

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.

From  Tom Grant 10 plays 0  

Solving a value mixture problem using a system of linear equations

Demonstrates how to read and understand the description so that equation can be made for a 2X2 system, then solve the system using and appropriate method.

From  Tom Grant 16 plays 0