a+c+5x=740000
a+c+7y=767000
b+c+5x=868000
a+3y=530000
You asked:
Solve the system of equations:\[\begin{aligned}a + c + 5 x &= 740000\\a + c + 7 y &= 767000\\b + c + 5 x &= 868000\\a + 3 y &= 530000\end{aligned}\]
MathBot Answer:
The system of equations has infinitely many solutions.
$$\begin{aligned}a &= 530000 - 3 y\\b &= 658000 - 3 y\\c &= 237000 - 4 y\\x &= \frac{7 y}{5} - 5400\end{aligned}$$
\(y\) is a free variable.