Algebra: Chapter 2-8
Inverse of a Sum and Simplifying
The inverse of a SUM Property: For any rational numbers, `−(a+b) = −a + (−b)`. The additive inverse of a sum is the sum of the additive inverses.
In other words, if you have a `−` in front of a paranthesis, then just change to sign of EVERYTHING inside. For example, `−(2a−7b−6)` becomes the opposite of each term, `−2a+7b+6`
Intro to Algebra: Chapter 1-10
Reasoning Strategies – or Try, Test and Revise
- UNDERSTAND the Problem
- Develop and carry out a PLAN
- Find the ANSWER and CHECK
Strategies look like:
- Draw a diagram
- Make an Organized list
- Look for a Pattern
- Try, Test and Revise
- Use Logical Reasoning
- Simplify the Problem
- Write an Equation
- Make a Table
- Work Backwards