how can i return l21 value

i am unable to return the l21 values as it is saved in a string format

here is my code:

syms l21 l31 l32 u11 u12 u13 u22 u23 u33
L=[1 0 0;l21 1 0;l31 l32 1]

L = 

U=[u11 u12 u13;0 u22 u23;0 0 u33]

U = 

B=L*U

B = 

A=[2 -3 1;1 -1 -2;3 1 -1]

A = 3×3

2 -3 1 1 -1 -2 3 1 -1

x=solve(A==B,[l21,l31,l32,u11,u12,u13,u22,u23,u33])

x = struct with fields:
    l21: 1/2
    l31: 3/2
    l32: 11
    u11: 2
    u12: -3
    u13: 1
    u22: 1/2
    u23: -5/2
    u33: 25

l21

l21 = 

Answer 1

[Dyuman Joshi]

As you can see above, l21 is stored as a field in the struct x. You need to use dot indexing to get its value -

syms l21 l31 l32 u11 u12 u13 u22 u23 u33
L=[1 0 0;l21 1 0;l31 l32 1];
U=[u11 u12 u13;0 u22 u23;0 0 u33];
B=L*U;
A=[2 -3 1;1 -1 -2;3 1 -1];
x=solve(A==B,[l21,l31,l32,u11,u12,u13,u22,u23,u33])

x = struct with fields:
    l21: 1/2
    l31: 3/2
    l32: 11
    u11: 2
    u12: -3
    u13: 1
    u22: 1/2
    u23: -5/2
    u33: 25

%Accessing field values via dot indexing
x.l21

ans = 

x.u11

ans = 

2