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anonymous
 4 years ago
What's the difference between "Linear Combination," and the "Substitution Method," and how do I solve using Substitution?
anonymous
 4 years ago
What's the difference between "Linear Combination," and the "Substitution Method," and how do I solve using Substitution?

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anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0for substitution you express one variable through another. For combination (elimination) you eliminate one variable.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0To solve using the substitution method, we rewrite one equation and sub it into the other. For example 4x + 3y = (2) [1] 3x + 2y = (3) [2] Let rewrite [1] so y is our subject 4x+3y=2 3y=24x y=2/3(4/3)x Now that we have y sub this into the second equation and solve for x 3x+2(2/3(4/3)x)=3 3x4/38/3 x=3 1/3 x=5/3 x=5 Now sub x=5 into our rearranged y equation y=2/3(4/3)*(5) =2/3+20/3 =6 So y=6 and x=5
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