Combining like terms Review Slides-Lisi

Combining like terms

A Quick Review

Like Terms in Algebra

are terms that have the same variables and powers. The coefficients do not need to match

https://en.wikipedia.org/wiki/Like_terms

Examples of Like Terms

• 2a and -7a

• 15x² and -27x²

• 0.3mn and 13mn

Not Like Terms

• 5x and 27

• 3m and 16n

• 5x and 12x²

Multiple Choice

True or False:

6x and 27x² are like terms

• True

• False

Multiple Select

Check all the boxes that have terms like 3m

• 0.2m

• 12x

• 5m²

• 123m

Multiple Choice

True or False:

16a and -2.3a are like terms

• True

• false

We can combine like terms by adding the coefficients (the number multiplying the variable) Remember to watch the signs!

Example 1: 2x-3x=(2-3)x=-1x=-x

Example 2: 5m+7m=(5+7)m=12m

Example 3: -10a+5a=(-10+5)a=-5a

Multiple Choice

Combine the like terms:

5x-3x

• 8x

• 15x

• 2x

• -15x

Poll

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