rref( ) row echelon form MATLAB

I found the row echelon form of my matrix A but now I am trying to find the solution set to the system. Is there a function that can do that in a way that rref( ) found the row echelon form? This is what I have so far:

A = [-1, 2, -3; 4, -5, 6]
R = rref(A) 

I know once I have my row echelon, I want to get u1 = -1 and u2 = -2 but I do not know what the function is in matlab that performs this calculation.

Any guidance would be great

Answer 1

[David Hill]

A=[-1 2;4 -5];
b=[-3;6];
x=A\b;

[ssmith]

@David Hill what does the line

x = A\b

do? I thought a solution set was solving across the matrix made using rref(A)