08-01 Distributive Prop & Combining like terms

What is a variable in math?

• The number in front of a letter

• A symbol for a value we don't know yet

• A number on its own that has a fixed value

What is a coefficient in math?

• The number in front of a variable used to multiply the variable

• A symbol for a value we don't know yet

• Something that is efficient with something else

• A number on its own that has a fixed value

What is a constant in math?

• A number on its own that has a fixed value

• A symbol for a value we don't know yet

• The number in front of a variable used to multiply the variable

Are 7x and 5y like terms?

• No, they have different variables.

• Yes, they have the same variables.

Are 5x and 5y like terms?

• No, they have different variables.

• Yes, they have the same coefficients.

Are 7x and 5x like terms?

• No, they have different variables.

• Yes, they have the same variables.

Simplify the following expression:

7x+5x

• x

• 7x

• 12x