2x - y + 6z - a = 7
2y + z + 7a = 8
You asked:
Solve the system of equations:\[\begin{aligned}2 x - y + 6 z - a &= 7\\2 y + z + 7 a &= 8\end{aligned}\]
MathBot Answer:
The system of equations has infinitely many solutions.
$$\begin{aligned}a &= - \frac{2 y}{7} - \frac{z}{7} + \frac{8}{7}\\x &= \frac{5 y}{14} - \frac{43 z}{14} + \frac{57}{14}\end{aligned}$$
\(y\) is a free variable.
\(z\) is a free variable.