Example

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

Question

$$1000-1$$

Answer

999

Solution


Use the algorithm method.
09910
1000
-1
999
Therefore, \(1000-1=999\).
\[999\]
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