Question

50+[8÷{8-(12÷5-2)}]of 1/2=?

Answer 1

$= 50+[8÷(8-(12÷5-2))] \times \frac{1}{2} \\ \\ = 50+[8÷(8-( \frac{12}{5} -2))] \times \frac{1}{2} \\ \\ = 50+[8÷(8-( \frac{12 - 10}{5} ))] \times \frac{1}{2} \\ \\ = 50+[8÷(8-( \frac{12 - 10}{5} ))] \times \frac{1}{2} \\ \\ = 50+[8÷(8-\frac{2 }{5} )] \times \frac{1}{2} \\ \\ = 50+[8÷(\frac{40 - 2 }{5} )] \times \frac{1}{2} \\ \\ = 50+[ \frac{1}{8} \times \frac{38}{5} ] \times \frac{1}{2} \\ \\ = 50+[ \frac{38}{40} ] \times \frac{1}{2} \\ \\ = 50+\frac{38}{80} \\ \\ = \frac{4000 + 38}{80} \\ \\ = \frac{4038}{80} \\ \\ = 50.475$