Solve the equation. 3a+b=10 & 2a+4b=0
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Updated 6/19/2015 6:03:58 AM
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Flagged by Andrew. [6/19/2015 6:03:58 AM]
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User: Solve the equation. 3a+b=10 & 2a+4b=0

Weegy: 1. b=-3 a+10 2. a=-2 b

Question
Updated 6/19/2015 6:03:58 AM
This conversation has been flagged as incorrect.
Flagged by Andrew. [6/19/2015 6:03:58 AM]
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3
3a + b = 10
2a + 4b = 0

(3a + b = 10) * (4):
12a + 4b = 40

(2a + 4b = 0) - (12a + 4b = 40):
-10a = -40
a = -40/-10
a = 4
3(4) + b = 10
12 + b = 10
b = 10 - 12
b = -2

Solution set: (4, -2)

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