solving multiplication and division equations. lesson objective students will be able to solve...
TRANSCRIPT
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Solving Multiplication and Division Equations
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Lesson Objective
Students will be able to solve multiplication and division equations.
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Lesson Beginning
Draw algebra tiles to model 3x = -9. Then solve for x.
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1) GOAL:Get the variable on one side of the equation.
2) You always perform the same operation toboth sides of an equation.
3) To undo an operation you perform its opposite operation to both sides of the equation.
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The inverse operation of multiplication is DIVISION.The inverse operation of division is MULTIPLICATION.
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9x = 45This reads 9 times xSo use the opposite.
Divide both sides by 9.9 9
x = 5
- 4m = - 28
- 4 - 4
m = 7
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68
k
This is a division
Problem, use
Multiplication
to solve it. - k
(8) (8)
= 48 Now Divide By -1 - 1 - 1
k = - 48
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Solve for x.
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Practice
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Homework
Pg 356 # 3-21 odds, 27, 31-41odds