SOLUTION: How do I use creamers rule with these 2 systems of equations? I meant for the "{" curly brackets to encompass both equations in each problem. Solve using Cramer's rule.(Hint: St

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Question 1074888: How do I use creamers rule with these 2 systems of equations? I meant for the "{" curly brackets to encompass both equations in each problem.
Solve using Cramer's rule.(Hint: Start by substituting m=1/x and n=1/y.)
1. {4/x+1/y=1
{8/x+4/y=3
2. {4/x-2/y=1
{10/x+20/y=0
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Substituting leads to,
4u%2Bv=1
8u%2B4v=3
So then the coefficient matrix is,
A=%28matrix%282%2C2%2C%0D%0A4%2C1%2C%0D%0A8%2C4%29%29
abs%28A%29=8
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.
.
A%5Bu%5D=%28matrix%282%2C2%2C%0D%0A1%2C1%2C%0D%0A3%2C4%29%29
abs%28A%5Bu%5D%29=1
.
.
.
A%5Bv%5D=%28matrix%282%2C2%2C%0D%0A4%2C1%2C%0D%0A8%2C3%29%29
abs%28A%5Bv%5D%29=4
.
.
.
So then,
u=abs%28A%5Bu%5D%29%2Fabs%28A%29=1%2F8
v=abs%28A%5Bv%5D%29%2Fabs%28A%29=4%2F8=1%2F2
So substituting back,
x=1%2Fu=8
y=1%2Fv=2
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Do the other one exactly the same way.
I just realized I used u and v instead of m and n.