DrDelMath
Elementary Algebra at Meramec
SUMMARY
Chapter 2: Equations, Inequalitites, and Problem Solving
Section 2.1: Solving Equations
Goals What You Should Learn
1. Goal One
2. Goal Two
3. Goal Three


Links to Supplemental Material
Always Check the List of OnLine Drill and Practice


Some fundamental properties of equality of real numbers will help us to solve equations.
These fundamental properties of equality of real numbers are the basis for the following two properties
of equations.
Section 2.2: Problem Solving
Goals What You Should Learn
1. Goal One
2. Goal Two
3. Goal Three

Percent
All percent problems are solved by referring to the basic formula that relates percentage, percent,
and the base of the percentage.
Percentage = (Percent)(Base)
There
are only three percent related problems:
(1) Given Percent and Base, calculate Percentage
(2) Given Percent and Percentage, calculate Base
(3) Given Percentage and Base, calculate Percent
If we let A represent Percentage, let P represent percent and B represent the
Base, the the basic formula may be written as
A = PB
which is read as follows:
The percentage
A is P percent of the base B.
Use this verbal statement and the basic formula to help translate percent problems
into an equation.
Finally remember the meaning of percent is "per 100" and convert all percents
to decimals.
Section 2.3: Simplifying Algebraic Expressions
Goals What You Should Learn
1. Goal One
2. Goal Two
3. Goal Three


Links to Supplemental Material
Always Check the List of OnLine Drill and Practice


Section 2.4: More About Solving Equations
Goals What You Should Learn
1. Goal One
2. Goal Two
3. Goal Three


Links to Supplemental Material
Always Check the List of OnLine Drill and Practice


Section 2.5: Formulas
Goals What You Should Learn
1. Goal One
2. Goal Two
3. Goal Three



Study the formulas presented on the Formula page of Special Topics. A link is provide under Supplemental Material.
Section 2.6: More About Problem Solving
Goals What You Should Learn
1. Goal One
2. Goal Two
3. Goal Three


Links to Supplemental Material
Always Check the List of OnLine Drill and Practice


Section 2.7: Solving Inequalities
Goals What You Should Learn
1. Goal One
2. Goal Two
3. Goal Three


Links to Supplemental Material
Always Check the List of OnLine Drill and Practice

