Example

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

Question

$$12-7-8$$

Answer

-3

Solution


Simplify  \(12-7\)  to  \(5\).
\[5-8\]
Simplify.
\[-3\]
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