[tex] \frac{1}{3} b2 + 10[/tex]
[tex]b = 7[/tex]
So the expression is
[tex]3 \div (7 \times 2 + 10)[/tex]
[tex]3 \div (14 + 10)[/tex]
[tex] 24 \div 3[/tex]
The answer is
8
