Example

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

Question

$$(-1) \times (-3)-12 \times 2$$

Answer

-21

Solution


Simplify  \((-1)\times (-3)\)  to  \(3\).
\[3-12\times 2\]
Simplify  \(12\times 2\)  to  \(24\).
\[3-24\]
Simplify.
\[-21\]
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