Question

600:{30:[401-(4.153-4.53)]}

Answer 1

`600:{30:[401-(4.153-4.53)]}`
`600:{30:[401-(4.(153-3))]}`
`=600:[30:(401-4.100)]`
`=600:(30:1)`
`=600:30=20`

Answer 2

\(600:\left\{30:\left[401-\left(4.153-4.53\right)\right]\right\}\) 

\(=600:\left\{30:\left[401-\left(4.\left(153-53\right)\right)\right]\right\}\) 

\(=600:\left\{30:\left[401-\left(4.100\right)\right]\right\}\) 

\(=600:\left\{30:\left[401-400\right]\right\}\) 

\(=600:\left\{30:1\right\}\) 

\(=600:30\) 

\(=20\)