SOLUTION: Use Cramer's Rule, if applicable, to solve the system.
3x - 4y - 12 = 0
5x + 2y + 6 = 0
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Question 315233: Use Cramer's Rule, if applicable, to solve the system.
3x - 4y - 12 = 0
5x + 2y + 6 = 0
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
[A]=
[b]=
.
.
Find the determinant of [A].
det[A]=
.
.
Replace the first column of [A] with [b]
[Ax]=
.
.
Calculate this determinant.
det[Ax]=
.
.
Calculate .
.
.
x=det[Ax]/det[A]
.
.
Replace the second column of [A] with [b]
[Ay]=
.
.
Calculate this determinant.
det[Ax]=
.
.
Calculate .
.
.
y=det[Ay]/det[A]
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