Question

can anybody solve this system for me
depending on the variable m solve the system
2x-(m+1)y+z=5
2mx+y-z=1
4mx-5y+z=11

Answer 1

long and tedious using elimination. i guess determinant will do it, but easiest method if you just need a solution is to cheat
http://www.wolframalpha.com/input/?i=2x-%28m%2B1%29y%2Bz%3D5+%2C2mx%2By-z%3D1%2C+4mx-5y%2Bz%3D11

Answer 2

simplify you equation first

Answer 3

try and isolate z and then use elimination or substitution based on preference.

Answer 4

wolfram is the quick way to solve this system, but here is how to do it "by hand" using elimination.

Answer 5

thankyou all so much