Question

transform the linear equations x+2y+3z=9,2x+3y+z=4,4x+5y+4z=15.​

Answer 1

Step-by-step explanation:

Ax=B⎣⎢⎢⎡124235314⎦⎥⎥⎤⎣⎢⎢⎡xyz⎦⎥⎥⎤⎣⎢⎢⎡2415⎦⎥⎥⎤

△=⎣⎢⎢⎡124235314⎦⎥⎥⎤=1(12−5)−2(8−4)+3(10−12)

=−7

△1=⎣⎢⎢⎡9415235314⎦⎥⎥⎤=9(1