SOLUTION: Use Cramer's Rule to solve the system 6x + 12y=33 4x + 2y=20

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Question 136142This question is from textbook College Algebra
: Use Cramer's Rule to solve the system
6x + 12y=33
4x + 2y=20 This question is from textbook College Algebra

Answer by vleith(2983) About Me  (Show Source):
You can put this solution on YOUR website!
Cramer's rule states --> see here http://www.okc.cc.ok.us/maustin/Cramers_Rule/Cramer's%20Rule.htm
So we need to find the determinant first
|6 12|
|4 2 |
12-48 = -36
To find x
|33 12|
|20 2 |
66-240 = -174
x = -174/-36 = 29/6
to find y
|6 33|
|4 20|
120 - 132 = - 12
y = -12/-36 = 1/3