Algebra 1 Tutorial
Solving an equation in one variable
Intro
In general, a one-variable equation such as ax+b=c can be solved by “undoing” the order of operations (PEMDAS).
The order of operations is: parenthesis, exponents, multiplication, division, addition, subtraction. By doing the order of operations in reverse, we unravel the equation and isolate the variable.
Sample Problem
Solution
Here is the systematic way to solve this equation:
Subtract 4 from both sides.
4x+4=20
-4 -4
___________
4x =16
Divide both sides by 4.
4x=16
/4 /4
x=4
About The Author
| Math Tutor 4 U |
| I am a life-long learner who has a passion for mathematics and the physical sciences. I tutor geometry, algebra, trigonometry, precalculus, calculus, and some other various subjects. I have been tutoring students now for approximately 5 years, mostly in mathematics but I do occasionally tutor physi... |
13 Subjects
KnowRo Tutor
1 Tutorial
Suggested Tutors for Algebra 1 Help
