Bennette's Algebra Post

ALGEBRA- a part of mathematics that uses mathematical statements using letters to represent the value of a number.

ONE- STEP ALGEBRA:

eg.

n - 6 = 17

n-6+6 = 17 + 6

n = 23

VERIFY:

n - 6 = 17

23 - 6 = 17

17 = 17 ✔

How I got that? Here are the steps:

1.) Isolate the variable.

2.) Cancel using the opposite.

-Create a zero pair for the constant.

3.) Balance on the other side of the equal sign.

4.) Verify your answer.

VARIABLE - the unknown

- use a letter to represent a number

CONSTANT - the integer in an algebraic expression or equation

eg. 3x = 9 <-- equation

3x <-- expression

MULTIPLY and DIVIDE:

1.) Isolate the variable.

2.) Cancel using the opposite

- multiply or divide

3.) Balance.

4.) Verify

MULTIPLY:

3n = 21

/3 /3

n = 7

Verify:

3n = 21

3(7) = 21

21 = 21 ✔

DIVIDE:

n/2 = 12

2/2 = 12(2)

n = 24

Verify:

n/2 = 12

24/2 = 12

12 = 12 ✔

When there are ( - ), multiply and divide cancel with the same integer.

TWO STEP ALGEBRA:

STEPS:

1.) Isolate the variable.

2.) Cancel the constant.

3.) Balance.

4.) Simplify the variable.

5.) Balance.

VIDEOS:

LINKS:

http://www.algebrahelp.com/

http://www.math.com/homeworkhelp/Algebra.html

http://staff.argyll.epsb.ca/jreed/math9/strand2/2201.htm

http://www.mathgoodies.com/lessons/vol7/equations.html

GAMES:

http://classroom.jc-schools.net/basic/math-algebra.html

http://www.onlinemathlearning.com/algebra-math-games.html