Example

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

Question

$$10.12-11.05=$$

Answer

-0.93

Solution


Use this rule: \(a-b=-(b-a)\).
\[-(11.05-10.12)\]
Use the algorithm method.
010
11.05
-10.12
0.93
After simplification, we have:
\[-(11.05-10.12)=-0.93\]
Therefore, \(10.12-11.05=-0.93\).
\[-0.93\]
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