Question

Simplify:
$\left\{5\left(18÷\overline{8-5}\right)-30\right\}+2\times 10÷5$

Answer 1

$$\begin{gathered} \left\{5\left(18÷\overline{8-5}\right)-30\right\}+2\times 10÷5 \\ \Rightarrow \{5\left(18÷3\right)-30\}+2\times 10÷5\mathrm{use}\mathrm{BODMAS}\hspace{0.17em}\mathrm{rule} \\ \Rightarrow \left\{5\right(\frac{18}{3})-30\}+2\times 10÷5 \\ \Rightarrow \{5\times 6-30\}+2\times 10÷5 \\ \Rightarrow \left\{30-30\right\}+2\times 10÷5 \\ \Rightarrow 0+2\times 10÷5 \\ \Rightarrow 0+2\times \frac{10}{5} \\ \Rightarrow 0+2\times 2 \\ \Rightarrow 0+4 \\ \Rightarrow 4 \end{gathered}$$