Example

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

Question

$$272-273$$

Answer

-1

Solution


Use this rule: \(a-b=-(b-a)\).
\[-(273-272)\]
Use the algorithm method.
273
-272
1
After simplification, we have:
\[-(273-272)=-1\]
Therefore, \(272-273=-1\).
\[-1\]
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