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Use addition to solve the linear system of equations. {X-y=6 {Y=x-4

 Feb 17, 2015

Best Answer 

 #2
avatar+709 
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The full thing: 

Simplifying x + -1(x + -4) = 6 Reorder the terms: x + -1(-4 + x) = 6 x + (-4 * -1 + x * -1) = 6 x + (4 + -1x) = 6 Reorder the terms: 4 + x + -1x = 6 Combine like terms: x + -1x = 0 4 + 0 = 6 4 = 6 Solving 4 = 6
 Feb 17, 2015

3+0 Answers

 #1
avatar+709 
+5

x-(x-4)=6 -> No solution. It all comes down to 4=6, which is impossible to fix/solve.

 Feb 17, 2015
 #2
avatar+709 
+5
Best Answer

The full thing: 

Simplifying x + -1(x + -4) = 6 Reorder the terms: x + -1(-4 + x) = 6 x + (-4 * -1 + x * -1) = 6 x + (4 + -1x) = 6 Reorder the terms: 4 + x + -1x = 6 Combine like terms: x + -1x = 0 4 + 0 = 6 4 = 6 Solving 4 = 6
GenericUsernameHere Feb 17, 2015
 #3
avatar+129852 
0

Thanks, GUH.....that's an extremely "clean" presentation....I wish mine looked  as good...LOL!!!

 

 Feb 17, 2015

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