216/d= 810-18(63d/18)
108/d= 810-18((612-63d)/18)
You asked:
Solve the system of equations:\[\begin{aligned}\frac{216}{d} &= 810 - 18 \cdot \frac{63 d}{18}\\\frac{108}{d} &= 810 - 18 \cdot \frac{612 - 63 d}{18}\end{aligned}\]
MathBot Answer:
The system of equations has no solution.