CONFIDENTIAL 1 Grade 8 Pre-Algebra Solving Equations with Variables on Both Sides.
4-2 EQUATIONS WITH VARIABLES ON BOTH SIDES MISS BATTAGLIA – ALGEBRA 1 CP OBJECTIVE: SOLVE...
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Transcript of 4-2 EQUATIONS WITH VARIABLES ON BOTH SIDES MISS BATTAGLIA – ALGEBRA 1 CP OBJECTIVE: SOLVE...
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WARM UP
Find the values of a and b if and = 64
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SOLVE
5t – 8 = 9t - 10
GOAL:Get variables on the same side of the equation.
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VERIFY THE SOLUTION
5t – 8 = 9t – 10 where t =
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TRANSPORTATIONMary 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?
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SPECIAL TYPES OF EQUATIONS
An equation has no solution if no value makes the equation true.
Solve
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SPECIAL TYPES OF EQUATIONS
An equation that is true for every value of the variable is an identity.
Solve
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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 – 1 b) 5a + 9 = 2a
c) 9 + 5a = 2a + 9 d) 9 + 5a = 5a + 9
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HOMEWORK
Pg 166-168 #8-13, 17, 20, 21, 25–27, 34, 33, 43