Question

120:{390:[5.100-(125-35.7)]}

Answer 1

120 : {390 : [5.100 - (125 - 35.7)]} = 120 : [390 : (500 - 125 + 245)] = 120 : (390 : 620) = 120.\(\frac{620}{390}\)

=\(\frac{40.62}{13}=\frac{2480}{13}=190\frac{10}{13}\)

Answer 2

120 : {390 : [5 . 100 - (125 - 35 . 7)]}

= 120 : {390 : [500 - (125 - 245)]}

= 120 : {390 : [500 - (-120)]}

= 120 : {390 : [500 + 120]}

= 120 : {390 + 620}

= 120 : 1010

= 120/1010

= 12/101