4 3/21 : 42% + 2,34 =

4 3/21 : 42% + 2,34
= 87/21 :42/100 + 2,34
= ( 87/21 x 100/42) + 2,34
= ( 8700/882) + 2,34
= 9,86 + 2,34
= 12,2
atau
= 12 1/5

4 3/21 :42%+2,34
87/21 x 100/42+2,34
8700/882+2,34
9,9(dibulatkan)+2,34
12,24