1. Objective: Write and solve multistep equations. Standards Addressed: 2.8.8.C: Create and interpret equations that model problem situations. 2.8.8.E: Select and use a strategy to solve an equation.

2.  Ex. 1 Gavin orders office supplies for a small company. Two suppliers offer pens at the same price per box. Supplier A gives a $2 discount on 4 boxes of pens. For the same total cost, Supplier B sells 3 boxes of pens and charges $4 shipping. What is the price of the box of pens?

3.  5x – 6 = -6x + 16 + 6 5x = -6x + 22 11x = 22 x = 2 Check x = 2 5(2) – 6 = -6(2) + 16 10 – 6 = -12 + 16 4 = 4

4.  5x – 7 = 4x + 3 + 7 5x = 4x + 10 x = 10 Check x = 10 5(10) – 7 = 4(10) + 3 50 – 7 = 40+ 3 43 = 43

5.  -3m + 14 = 5m + 38 -3m = 5m + 24 -8m = 24 m = -3 Check x = -3 -3(-3) + 14 = 5 (-3) + 38 9 + 14 = -15 + 38 23 = 23

6. 5x + 2 = 3x 2 = -2x -1 = x Check x = -1 5(-1) + 2 = 3 (-1) -5 + 2 = -3 -3 = -3

7. 5x – 7 = 4x -7 = -x 7 = x Check x = 7 5(7) -7 = 4 (7) 35 – 7 = 28 28 = 28

8. -3m + 14 = 5m -8m = -14 m = -14/-8 = 7/4

10.  5x -10 = x + 30  5x = x + 40  4x = 40  x = 10

12.  87 + 86 + 91 + 90 + T = 90 5 354 + T = 450 T = 96