Example

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

Question

$$-48-20-40+96-9$$

Answer

-21

Solution


Simplify  \(-48-20\)  to  \(-68\).
\[-68-40+96-9\]
Simplify  \(-68-40\)  to  \(-108\).
\[-108+96-9\]
Simplify  \(-108+96\)  to  \(-12\).
\[-12-9\]
Simplify.
\[-21\]
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