AAAMath.com
Sorted by Grade Level
 Contact AAA Math       Spanish version     New!! AAAMath lessons translated to over 100 languages

Sorted by Subject

Equations 3 Learn Contents and Search
 Practice Next Lesson
 Play Previous Lesson
 Explore  Feedback

 

Solving an Equation

An equation is a mathematical statement that has two expressions separated by an equal sign. The expression on the left side of the equal sign has the same value as the expression on the right side.

One or both of the expressions may contain variables. Solving an equation means manipulating the expressions and finding the value of the variables.

For example solve the equation: 7x = 21
To keep both sides of an equation equal, we must do exactly the same thing to each side of the equation. If we multiply (or divide) one side by a quantity, we must multiply (or divide) the other side by that same quantity.
In order to solve this equation we would divide both sides by 7. The equation would become 7x/7 = 21/7. When simplified, this would become x = 21/7 or x = 3.
It is possible to substitute the value of x back into the original equation 7*3=21.






Practice

Solving an Equation

If  , Y =     


You have correct and   incorrect.  This is percent correct.

Return to Top



Play
GameWhat is it?Best Score
How many correct answers can you get in 60 seconds?
Extra time is awarded for each correct answer. Play longer by getting more correct.
How fast can you get 20 more correct answers than wrong answers?

Sudoku

Return to Top

Explore
Math Lessons by Grade
Math Topics

How do AAAMath lessons map to Common Core State Standards?


Try our new mobile friendly design at aaaKnow.com



Math Resources

Spelling Lessons by Grade

Vocabulary Lessons by Grade

Geography

Return to Top



Copyright © 2012 J. Banfill. All Rights Reserved. Legal Notice