SOLUTION: Use the solution of the system below to find x-y. 4x-2y=11 3x-4y=-6

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Question 198190This question is from textbook North Carolina prentice hall mathematics algebra 1
: Use the solution of the system below to find x-y.
4x-2y=11
3x-4y=-6
 This question is from textbook North Carolina prentice hall mathematics algebra 1

Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
4x-2y=11 multiply by -2 & add.
3x-4y=-6
-8x+4y=-22
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-5x=-28
x=-28/-5
x=28/5 ans.
3*28/5-4y=-6
84/5-4y=-6
-4y=-6-84/5
-4y=(-6*5-84)/5
-4y=(-30-84)/5
-4y=--114/5
y=(-114/5)/-4
y=-114/5*-1/4
y=114/20 ans.
x-y=28/5-29/10=(28*2-29)/10=(56-29)/10=27/10 ans.