Is (8,7) a solution to this system of equations?
16x–18y=2
20x–20y=20
MathBot Answer:
True, $\left( 8, \ 7\right)$ is a solution of $16 x - 18 y = 2 \text{ and } 20 x - 20 y = 20$.
$$\begin{gathered}16 x - 18 y = 2\\16 \left(8\right) - 18 \left(7\right) \stackrel{?}{=} 2\\2 = 2\end{gathered}$$$$\begin{gathered}20 x - 20 y = 20\\20 \left(8\right) - 20 \left(7\right) \stackrel{?}{=} 20\\20 = 20\end{gathered}$$