Example

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

Question

$$12-5-6+7-2$$

Answer

6

Solution


Simplify  \(12-5\)  to  \(7\).
\[7-6+7-2\]
Simplify  \(7-6\)  to  \(1\).
\[1+7-2\]
Simplify  \(1+7\)  to  \(8\).
\[8-2\]
Simplify.
\[6\]
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