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How to solve a system of equations by substitution
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Jul 20, 2017
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How to solve a system of equations by substitution
Mathematics
middle-school
Ivan Nikolchov
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Ivan Nikolchov
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First, substitute y in 3x-2y=9 for what it says y equals (2x-7). You now have: 3x-2(2x-7)=9. Breakdown:
3x-2(2x-7)=9
3x-4x+14=9
-1x=-5
x=5
next solve for y
y=2x-7
y=2(5)-7
y=10-7
y=3
So Now We Have x=5, and y=3.
Hope That Helped =D
Jeune
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Jul 27, 2017
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Jeune
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