Question

x + 2y + 3z = 14
4y + 5z = 23
6z=18​

Answer 1

Resposta:

z=18/6 > z=3

4y+5*3=23 > 4y+15=23 > 4y=8 > y=8/4 y=2

x+2*2+3*3=14 > x= 14-13 > x= 1

S={1,2,3}

espero ter ajudado ;)