Question

2x +y +3z = 8

X -y -5z = 6​

Answer 1

Respuesta:

Despejamos y en la 1ra ecuación$2x + y + 3z = 8\\\\y = - 8 - y\\y = - 8 / - 1 = 8\\y = 8\\\\2x = 8 - 8 + 3z\\2x = 0 + 3z\\3z = 8\\z = 8 / 3\\z = 2.66666\\2x + 0 + 2.66666 = 8\\2x = 8 - 0 - 2.66666\\2x = 5.33334 \\5.33333 + 2.66666 = 8\\\\\\x - y - 5z = 6\\x + 0 + 2.66666 = 6\\x = 6 - 2.66666\\x = 3.333343.33334 + 2.66666 = 6$ ,para hallar los valores de x , z :