Example

3(r+2s)=2t-4
a⋅(b-2)=3b
3(r+2s)=2t-4
a⋅(b-2)=3b

Question

$$810\div9$$

Answer

90

Solution


Use the algorithm method.
90
9|810
81
0
Therefore, \(810\div 9=90\).
\[90\]
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