78 × 89 = 78 × 100 − 78 × __ +78 × 8
You asked:
Solve the equation \(78 \cdot 89 = 78 \cdot 100 - 78 ? + 78 \cdot 8\) for the variable \(?\).
MathBot Answer:
The solution is: \[? = 19\]
\[\begin{aligned}78 \cdot 89 &= 78 \cdot 100 - 78 ? + 78 \cdot 8\\6942 &= 8424 - 78 ?\\78 ? &= 1482\\? &= 19\end{aligned}\]