Combining Like Terms

Combining Like Terms

What to do when you see an expression of equation.

- Look at each side of the equal sign (sometimes there is not one)

- Look for numbers with no varibale (or no x)

- Combine them

-Look for variable (x's or number with the x)

- Combine them

- Remember becareful of postive and negative numbers.

Let's try one together

3 - 5 + 7y + 8y

Multiple Choice

Combine like terms......

7m + 6m - 9

• 4m

• 13m -9

• 7m - 3

• 2m +9

Multiple Choice

Combine like term.....

-4d - 8 - 9d + 2

• 13d + 6

• 12d -6

• 13d -6

• -12d + 10

Multiple Choice

Combine like terms (Don't solve)

x + 3 + 4x = 6 + x + 4

• 8x = 10x

• 5x +3 = 4x + 6

• 5x +3 = 10 + x

• 7x + 3 = 10 + X

Multiple Choice

Combine like terms (do not solve)

4x + 3 - 2x = 5x + 3

• 2x +3 = 5x +3

• 5x = 8x

• 4x -1 = 5x + 3

• 6x +3 = 5x + 3

Poll

Who hear has heard of order of operations ?

• Say what?

• Yes I remember someone saying it.

• I can tell you all the steps

Order of Operations

• Paranthesis

• Exponents

• Multiply and Divide (in order they appear)

• Add or Subtract (in the order they appear)

40 + 3 (3  $\times$  7) + 7 -5

• First Paranthesis 

• Exponents

• Multiply and Divide 

• Add and subtract 

Multiple Choice

 $4\ +1\times\left(16-3\right)\times8$  

• 110

• 109

• 108

• 107

Multiple Choice

 $10\ -2\ \times3\ -\left(3\times3\right)\ +8$  

• 7

• -7

• 9

• 10

Multiple Choice

 $9\ +\ \left(12\times2\right)\ -14\ +3$  

• 19

• 20

• 21

• 22