Example

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

Question

$$15-17+8-4$$

Answer

2

Solution


Simplify  \(15-17\)  to  \(-2\).
\[-2+8-4\]
Simplify  \(-2+8\)  to  \(6\).
\[6-4\]
Simplify.
\[2\]
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