Date: Feb 17, 2013 5:49 AM
Author: Milos Milenkovic
Subject: How to express system of equations in more than one row

Dear, 
I want to express system of equations in many lines (large system), each equation in one row, but expression in which equations are separated only by coma is not correct:
syms x y z
S=solve(x+y==1,
x-11*y,
y+3*z==21)
S=[S.x S.y S.z]

How to write the system of equations in multiple lines?

Thanks,
M