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leah has 3 fewer than 4 times as many DVD`s as sonia has. leah has 37 dvds. how many dvds does sonia have?
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Nov 2, 2016
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leah has 3 fewer than 4 times as many DVD`s as sonia has. leah has 37 dvds. how many dvds does sonia have?
Mathematics
middle-school
Ruchira Nawarathna
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x = sonias dvds
37 = 4x - 3
+3 +3
40 = 4x
10 = x
sonia has 10 dvds
Lauryn
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Nov 5, 2016
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Lauryn
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Make an equation:
L = 4S - 3
Where 'L' is the amount of DVD's Leah has and 'S' is the aount of DVD's Sonia has.
Plug in 37 for 'L' and solve for 'S':
37 = 4S - 3
Add 3 to both sides:
40 = 4S
Divide 4 to both sides:
S = 10
So Sonia has 10 DVD's.
Pkpk
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Nov 7, 2016
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