given the system of equations:
We will solve the system by substitution as follows:
From equation (2)
substitute with (y) from equation (4) into equation (1)
From the equation (4) and (5) substitute with (x) and (y) into equation (3):
solve the equation to find the value of (z):
substitute into the equations (4) and (5) to find the values of (x, y)
So, the answer will be:
The system has only one solution
x = 5
y = 1
z = 1