Vhat is the solution to the following system?

3x+10y - 12z = 40

X-5y = 0

X-4z = 0

Answer:x=20

y=4

z=5

Step-by-step explanation:the third equaiton times by 3, so we can get 3x-12=0

and along with the first equation we can get y=4

and the second equation x=20

the third equation z=5