hallar la solucion de

2X1 + 4X2 +6X3 = 18

4X1 +5X2 +6X3 = 24

3X1 +X2 -2X3 = 4

[Torsten]

Write your system of linear equations as A*x = b for a (3x3)-matrix A and a (3x1)-vector b and solve for x using x = A\b :

https://uk.mathworks.com/help/matlab/math/systems-of-linear-equations.html

Answer 1

[Walter Roberson]

syms X1 X2 X3
eqns = [2*X1 + 4*X2 + 6*X3 == 18
        4*X1 + 5*X2 + 6*X3 == 24
        3*X1 +   X2 - 2*X3 == 4]

eqns = 

sol = solve(eqns)

sol = struct with fields:
    X1: 4
    X2: -2
    X3: 3

%crosscheck
subs(eqns, sol)

ans =