maths
posted by CHRYSTABELLE .
Use crammers rule to solve the system of linear equations
3x+2yz = 0
2xy+z = 1
xy+2y= 1

Cramer's rule is well explained here:
http://www.purplemath.com/modules/cramers.htm
You will need to calculate the determinants of four 3x3 matrices. I assume you know how to do that. If not, it's high time to learn how.