Combining Like Terms

What is a coefficient?

• The number in front of a letter.

• A letter used to represent an unknown value.

• A number that is not attached to a letter.

• Terms with the same letters and raised to the same power.

What are like terms?

• The number in front of a letter.

• A letter used to represent an unknown value.

• A number that is not attached to a letter.

• Terms with the same letters and raised to the same power.

What is a constant?

• The number in front of a letter.

• A letter used to represent an unknown value.

• A number that is not attached to a letter.

• Terms with the same letters and raised to the same power.

What is a variable?

• The number in front of a letter.

• A letter used to represent an unknown value.

• A number that is not attached to a letter.

• Terms with the same letters and raised to the same power.

Combine like terms  $8x-9y+16x+12y$  

•  $27xy$  

•  $24x\ -\ 3y$  

•  $24x+21y$  

•  $24x+3y$  

 $-\left(5x-6\right)$  

•  $5x-6$  

•  $-5x+6$  

•  $-5x-6$  

•  $1x$  

 $4x\left(3x+2y\right)$  

•  $20x^2y$  

•  $24x+8xy$  

•  $12x^2+8xy$  

•  $12x+8y$  

 $-2\left(4x^2+y\right)+14y$  

•  $-8x^2+15y$  

•  $-8x^2+12y$  

•  $-8x^2+16y$  

•  $-8x^2-12y$  

 $14y+22-15y^2+23y$  

•  $-15y^2+37y+22$  

•  $15y^2+9y+22$  

•  $-15y^2+9y+22$  

•  $44y^2$  

 $-\left(y-x\right)+6\left(5x+7\right)$  

•  $29x-y+7$  

•  $31x-y+42$  

•  $29x+7y$  

•  $72xy$