Example

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

Question

$$9+4+8$$

Answer

21

Solution


Simplify  \(9+4\)  to  \(13\).
\[13+8\]
Simplify.
\[21\]
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