Warm-Up• In your binder, you will do this type of warm-up on your

notebook paper. Refer to the diagram of how your notes/notebook should look on my teacher webpage!

Simplify or solve:1) 4x + 9x + 7 + xANS: 14x + 72) 3x = 48ANS: x = 163) 2x + 1 = 4x – 3ANS: x = 2

VocabularyExpression - Numbers, symbols and operators (such as + and ×) grouped together that show the value of something. (no equal sign)

Equation - An equation says that two things are the same, using mathematical symbols.

Variable - A symbol for a number we don't know yet. It is usually a letter like x or y.