Example

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

Question

$$-50+19-20+3$$

Answer

-48

Solution


Simplify  \(-50+19\)  to  \(-31\).
\[-31-20+3\]
Simplify  \(-31-20\)  to  \(-51\).
\[-51+3\]
Simplify.
\[-48\]
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