Example

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

Question

$$1-3 \times 1-2$$

Answer

-4

Solution


Simplify  \(3\times 1\)  to  \(3\).
\[1-3-2\]
Simplify  \(1-3\)  to  \(-2\).
\[-2-2\]
Simplify.
\[-4\]
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