6x+10+y=100
y+10-z=100
You asked:
Solve the system of equations:\[\begin{aligned}6 x + 10 + y &= 100\\y + 10 - z &= 100\end{aligned}\]
MathBot Answer:
The system of equations has infinitely many solutions.
$$\begin{aligned}x &= - \frac{z}{6}\\y &= z + 90\end{aligned}$$
\(z\) is a free variable.