Question

45-[38-{60/ 3- ( 9-7/3)}]

Answer 1

= 45 - [ 38 - { 60 / 3 - ( 9 - 2.33 ) } ]
= 45 - [ 38 - { 60 / 3 - 6.67 } ]
= 45 - [ 38 - { 20 - 6.67 } ]
= 45 - [ 38 - 13.33 ]
= 45 - 24.67
= 20.33

Hope this helps...