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:
`{(7x,+,8y,+,19z,=,-22),(3x,+,2y,+,11z,=,-8),(3x,+,4y,+,7z,=,-10):}`
x =
y =
z =
`-2-5z`
`-1+2z`
`z`