Example

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

Question

$$7 \times 1-9$$

Answer

-2

Solution


Simplify  \(7\times 1\)  to  \(7\).
\[7-9\]
Simplify.
\[-2\]
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