1. 4-2 EQUATIONS WITH VARIABLES ON BOTH SIDES MISS BATTAGLIA – ALGEBRA 1 CP OBJECTIVE: SOLVE EQUATIONS WITH VARIABLES ON BOTH SIDES; IDENTIFY EQUATIONS THAT HAVE NO SOLUTION OR ARE IDENTITIES.

2. WARM UP

3. SOLVE 5t – 8 = 9t - 10 GOAL: Get variables on the same side of the equation.

4. VERIFY THE SOLUTION

5. TRANSPORTATION Mary and Jess are sisters. They left school at 3:00pm and biked home along the same path. Mary biked at a speed of 12 mi/h. Jess biked at 9 mi/h. Mary got home 15 min before Jess. How long did it take Mary to get home?

6. SPECIAL TYPES OF EQUATIONS

8. MENTAL MATH Without writing the steps of a solution, tell whether the equation has one solution, no solution, or is an identity. a)9 + 5a = 5a – 1b) 5a + 9 = 2a c) 9 + 5a = 2a + 9d) 9 + 5a = 5a + 9

9. HOMEWORK Pg 166-168 #8-13, 17, 20, 21, 25–27, 34, 33, 43