Chapter 12 Lesson 1 Simplifying Expressions
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•
Mathematics
•
10th Grade
•
Hard
Sofia Barreto
FREE Resource
5 Slides • 0 Questions
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Chapter 12 Lesson 1 Simplifying Expressions
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Simplifying Expressions
To simplify variable expressions you combine like terms
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What are like terms?
numbers with no variables: 3, -3, 7, -9, 0
numbers with the SAME variables : 2x, 4x, -3x, -9x, 8x
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Example 1
Simplify by combining like terms
-11a + 9a (these are like terms because they have the same variable a)
- 11 + 9 = -2
Don't forget to add your variable
Answer: -11a + 9a= -2a
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Example 2
Simplify
- 4x - -6x
*special rule, two negatives together turn into a plus
-4x + 6x
One negative, one positive so you subtract
6-4=2
Look at bigger number (6), it's positive so your answer is positive 2x
Chapter 12 Lesson 1 Simplifying Expressions
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