Example

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

Question

$$12-4-7$$

Answer

1

Solution


Simplify  \(12-4\)  to  \(8\).
\[8-7\]
Simplify.
\[1\]
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