Math Help - Help find value for y

1. Help find value for y

when...

2x + 3y + 2 = 9
x - 2y -z = 4
x -3y + 2z = -3

what is y? I don't know how to solve this, please help. TY.

2. Is the 2 in eq#1 supposed to be 'z' ?

3. Reply

The solution is attached for your reference.

4. Originally Posted by axi
when...

2x + 3y + 2 = 9
x - 2y -z = 4
x -3y + 2z = -3

what is y? I don't know how to solve this, please help. TY.
Yes, I think for the first one you meant: 3x+3y+2x=9. There are actually many ways to do this problem, substitution being the longest and matrices being the shortest. Are you familiar with matrices and their inverses?