PDF chapter test TRY NOW

Convert the tree diagram into an algebraic expression.
 
82.png
 
The algebraic expression is 
.
Answer variants:
\((8 \div a) + [(b \div 4) + 3]\)
\((8 \div a) + [(b \div 4) - 3]\)
\((8 \div a) - [(b \div 4) + 3]\)