Example

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

Question

$$-6+84$$

Answer

78

Solution


Reorder the terms.
\[84-6\]
Use the algorithm method.
714
84
-6
78
Therefore, \(-6+84=78\).
\[78\]
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