End 1st: Fill out planner Monday Homework: Like terms/Distrib Prop worksheet 5 minutes 1st: Fill out planner 2nd: Take papers out of pass back binder (leave on desk) Take out challenge of the week if you did it. 3rd: Warm Up: one question on front, one on back 4th: Practice Math Facts on plastic sleeve Solve each equation (check left one only): End

1.2 Distributive Property & Combining Like Terms How can “Combining Like Terms” and the “Distributive Property” be used to simplify expressions?

7 x Like terms: Rules: Same Variable AND same exponent Coefficients can be different (# attached to variable) 3. Constants are like terms (ie. like 5 and 3 ) Like Terms Unlike Terms 3x and 2x 5x2 and 2x The exponents are different. 3.2 and n Only one term contains a variable 6a and 6b The variables are different w and w 7 5 and 1.8 7 x Coefficient Variable

Identify like terms in the list. 3t 5w2 7t 9v 4w2 8v Look for like variables with like powers. 3t 5w2 7t 9v 4w2 8v Like terms: (3t and 7t) (5w2 and 4w2) (9v and 8v)

Simplify. A. 6t – 4t 6t – 4t 6t and 4t are like terms. 2t Subtract the coefficients. B. 45x – 37 – x + 4

Write an expression using the side lengths. Geometry Application Write an expression for the perimeter of the triangle. Then simplify the expression. x 2x + 3 3x + 2 Write an expression using the side lengths. Identify and group like terms. Add the coefficients.

Your Turn: -5a + 4 - 2a -x + 2 + 8x - 5 6x + 8y 2x + 3 x + 1 3. Write an expression for the perimeter of the given figure 2x + 3 x + 1

You can use the Distributive Property to multiply numbers mentally by breaking apart one of the numbers and writing it as a sum or difference.

Simplify the expressions: –2(3 – d)

Simplify the expression: 3d – (9 – 2d)

Simplify the expression: 3d – (9 – 2d)