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January 29, 2015

January 29, 2015

Posted by **Anonymous** on Wednesday, December 7, 2011 at 10:20pm.

3x+4y=-1

5x-2y=4

- solve using cramer's rule -
**MathMate**, Wednesday, December 7, 2011 at 10:45pmFirst calculate the determinant D of

3 4

5 -2

=3*(-2)-4*5=-26

Replace the first column by the RHS,and calculate determinant D1

-1 4

4 -2

=(-1)(-2)-4*4

=-14

Replace the column with the RHS and calculate determinant D2

3 -1

5 4

=3*4-(-1)*5

=17

x=D1/D=-14/-26=7/13

y=D2/D=17/-26=-17/26

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