Example

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

Question

$$12-10+4+8-10-5$$

Answer

-1

Solution


Simplify  \(12-10\)  to  \(2\).
\[2+4+8-10-5\]
Simplify  \(2+4\)  to  \(6\).
\[6+8-10-5\]
Simplify  \(6+8\)  to  \(14\).
\[14-10-5\]
Simplify  \(14-10\)  to  \(4\).
\[4-5\]
Simplify.
\[-1\]
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