Algebra: Chapter 8, Lesson 4, page 373.
Using systems of equations
Steps to solve systems of equations can be:
- Graph the equations
- Substitution of one variable in terms of the other
- Adding or subtracting the 2 equations
Before you start attacking the word problem, make sure you have a plan of attack such as:
- Understand the problem
- Develop and carry out a PLAN
- Find the ANSWER and CHECK
Click here for a pretty good link from purplemath.com with examples.