1. 2.3 solving multi-step equations

2. Review combining like terms Term-- the individual item(s) being added or subtracted. Example: 3x + 5x Example: 5y – 7 + 3y Example: 2x + 8y – 7x – 3y 8x 8y - 7 -5x + 5y 2x – 7x + 8y - 3y

3. 17x – 23 + 9x = 55 17x + 9x - 23 = 55 26x - 23 = 55 + 23 = +23 26x = 78 26 26 x = 3

4. 45x + 21 - 17x = -63 45x -17x +21 = -63 28x +21 = -63 - 21 = -21 28x = -84 28 = 28 x = -3 45x + 21 - 17x = -63

5. -22x +22 + 45x = 229 -22x + 45x + 22 = 229 23x + 22 = 229 - 22 = -22 23x = 207 23 23 x = 9

6. 27x + 19 – 39x = -65 27x – 39x + 19 = -65 -12x + 19 = -65 - 19 = -19 -12x = -84 -12 = -12 x = 7

7. Distributive property review 3(x + 2)=3x + 6 -4(3x + 7)=-12x - 28 -3(2x - 9)= -6x + 27

8. 4(2x + 7) = 108 4(2x) + 4(7) = 108 8x + 28 = 108 - 28 = -28 8x = 80 8 8 x = 10

9. -7 (3x -1) = 91 -21x -7 (3x -1) = 91 +7 = 91-21x+7 = 91 -7 - 7 -21x = 84 -21 -21 x = -4

10. x + 5(x -1) = 7 6x - 5 = 7 +5 6x = 12 6 x = 2 x + 5(x -1) = 7 x + 5x x + 5x - 5 = 7

11. Assignment (section 2.3) Book pg 98: 10-19, 25-32, 40-46 evens, 72-80