Try another version of this question Solve the system of equations. If the system has an infinite number of solutions, express them in terms of the parameter z. Get help:
`{(-9x,-,10y,-,46z,=,-47),(-6x,-,14y,-,38z,=,-46),(3x,+,5y,+,17z,=,19):}`
x =
y =
z =
`3-4z`
`2-z`
`z`