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Thursday, September 30
285234 bbb
Today’s Agenda
1. Fill in planner1. Practice 2-2
2. Bell Work
3. Collect test corrections and grade Practice 2-1
4. Solving Two Step Equations (Notes)
5. Group Activity
6. Independent Work
Bell Work(Solve each equation)
123)4(3 xx
459)5(9 ww
nnn 32
ObjectiveSWBAT use the distributive property to solve
multi step equations using addition, subtraction, multiplication, and division.
Solving Multi Step Equations
If there are like terms on one side of an equation, use the____ _______ property to combine them. distributive
If there are grouping symbols in the equation, use the _______________ property to eliminate them. distributive
Steps for Solving a Multi-Step Equation
1. Clear the equation of fractions and decimals
2. Use the Distributive Property to remove parenthesis on both sides
3. Combine like terms on both sides
4. Undo addition or subtraction
5. Undo multiplication or division
78122 cc7812)12( c
78123 c12 12
Example 1
3 3663 c
22c
Check Your Solution c 22Example 1 78122 cc
781222222 78122244
781266 7878
12)4(2 b1282 b
8 8
Example 2
2 242 b
2b
Solving a Multi-Step Equation with Fractions
Two methods
1. Rewrite the equation with fraction coefficients.
2. Multiply to “clear” the fractions
723
2xx
72
1
3
2 xx
38245
4
yy
2038)245
4(20
yy
76040544 yy
76040516 yy
76
3
6
4 xx
76
7x
7
67
6
7
7
6 x
6x
7604021 y40 40
72021 y21 21
29.34y
Solving an Equation with Decimals
You can clear an equation of decimals by multiplying by a power of 10.
25.1375.85.0 a
)25.13(100)75.85.0(100 a132587550 a
875 875
45050 a50 50
9a
12)4(2 b1282 b
8 8
Example 3
2 242 b
2b
ObjectiveSWBAT use the distributive property to solve
multi step equations using addition, subtraction, multiplication, and division.