SOLUTION: Use Cramer's Rule to solve the system. 4x − y = −18 x + 4y = 4

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Question 913782: Use Cramer's Rule to solve the system.
4x − y = −18
x + 4y = 4
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
A=%28matrix%282%2C2%2C4%2C-1%2C1%2C4%29%29
abs%28A%29=17
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.
A%5Bx%5D=%28matrix%282%2C2%2C-18%2C-1%2C4%2C4%29%29
abs%28A%5Bx%5D%29=-68
.
.
A%5By%5D=%28matrix%282%2C2%2C4%2C-18%2C1%2C4%29%29%7D%7D%0D%0A%7B%7B%7Babs%28A%5By%5D%29=34
.
.
x=abs%28A%5Bx%5D%29%2Fabs%28A%29=-68%2F17=-4
.
.
y=abs%28A%5By%5D%29%2Fabs%28A%29=34%2F17=2