Unit 3 Quiz 4

• 4x

• -12

• -3

• 10

• 8x

• 1

• 12

What is the first step you should take to solve this problem?

1 + 4n - 6n = 1 - 8n

• subtract 8n to both sides

• multiply 6n to both sides

• combine the like terms 4n + -6n

What is the first step you should take to solve this problem?

-3(x - 2) = -8 +9b

• add 8 to both sides

• subtract 9b from both sides

• Distribute -3 to the x and -2

• add 2 to both sides

Put the Steps or solving Equations with Variables on both sides in order.

• Distribute

• Combine Like terms

• Move the variables to one side

• + or - the constant

• 2x-6=5x-9

• -6=3x-9

• 3=3x

• 1=x

What is a variable?

• It's a number in an equation.

• A letter representing an unknown number in an equation.

• The symbols in an equation that aren't letters or numbers.

• Any equation with an equals sign.

In the equation 2x + 3y = 19, what is the variable? Choose the best answer.

• x

• y

• =

• Both x and y are variables