Kaecee's Algebra Post

Variable: The unknown, using a letter to represent the number.

Constant: The integer in an algebraic expression or equation.

*You have to make a zero pair

Algebra: Writing mathematical phrases using letters to represent numbers

Eg. 9x -7 = -7

Solving Addition/Subtraction One Step Equations:
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

3 + p = 8

3 - 3 + p = 8 - 3

p = 5

3 + p = 5

3 + 5 = 8

8 = 8

x - 7 = 13

x - 7 + 7 = 13 + 7

x= 20

x - 7 = 13

20 - 7 = 13

13 = 13

Solving Addition/Subtraction One Step Equations Using Algebraic Tiles:
1. Isolate the variable
2. Cancel the constant using a zero pair
3. Balance
4. Verify

Solving Two Step Equations:
1. Isolate the variable
2. Cancel the constant
3. Balance
4. Simplify the variable
5. Balance
6. Verify

3x + 8 = 11

3x + 8 - 8 = 11 - 8

3x = 9

3x/ 3 = 3/3

x = 1

3x + 8 = 11

3 (1) + 8 = 11

3 + 8 = 11

11 = 11

A website that might help you out

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