
Multiplying/Dividing Equations
Presentation
•
Mathematics
•
7th Grade
•
Hard
Rebecca McDowell
Used 7+ times
FREE Resource
4 Slides • 8 Questions
1
Multiplying/Dividing Equations
Here are a few things to remember...
2
To solve multiplication equations
Must do the inverse operation... which is division
Division property of Equality says we must divide both sides of the equation by the same number
***OUR GOAL IS TO GET THE VARIABLE ON A SIDE BY ITSELF WITH A +1 AS THE COFEEICIENT***
3
Multiple Choice
6d=24
d=144
d=4
Neither
4
Multiple Choice
20=−4y
y=5
y=−5
y=80
y=−80
none of these
5
To solve a division equation
You must to the inverse operation.... which is multiplication
Multiplication property of Equality says we must multiply both sides of the equation by the same number
***OUR GOAL IS TO HAVE THE VARIABLE ON A SIDE BY ITSELF WITH A COEFFICIENT OF +1***
6
Multiple Choice
3x=−6
x=−2
x=2
x=−18
x=18
none of these
7
Multiple Choice
8c=−7
c=56
c=−56
c=−87
c=87
none of these
8
When you have a fraction as a coefficient... how do you "undo" multiplying by a fraction?
You need to use the multiplicative inverse which will give you a 1 as the coefficient
25⋅52=1010=1
Multiply both sides by 25
25⋅52p=6⋅25
p=230=15
9
Multiple Choice
What is the multiplicative inverse of
−5858
85
−85
10
Multiple Choice
−58b=8
b=1
b=−1
b=5
b=−5
none of these
11
Multiple Choice
83h=−9
h=−24
h=24
h=27
h=−27
none of these
12
Multiple Choice
−14=32x
x=2 31
x=−2 31
x=−21
x=21
none of these
Multiplying/Dividing Equations
Here are a few things to remember...
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