SOLUTION: solve the system of equations using a matrix. separate the x and the y values with a comma. 2x+y=-22, -3x+8y=-24

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Question 602866: solve the system of equations using a matrix. separate the x and the y values with a comma. 2x+y=-22, -3x+8y=-24

Answer by Alan3354(30993) About Me  (Show Source):
You can put this solution on YOUR website!
2x+y=-22
-3x+8y=-24
------------
|+2 +1 22|
|-3 +8 24|
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Det = 2*8 - (-3)*1
Det = 19
--------
x*Det = 1*24 - 8*22 = -152
x = -8
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-y*Det = 2*24 + 66 = 114
y = -6