Thread: Substitution
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Old October 7th, 2008, 06:11 PM
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skeeter skeeter is offline
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Default
y = 2x+1
3x + 2y = 16

substitute (2x+1) for y in the second equation ...

3x + 2(2x+1) = 16

solve for x , then use the first equation to find y.
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