4 1/2 + 3 2/5+ 0,85+7,4=

4 1/2 + 3 2/5 + 0,85 + 7,4
= (4+3) + (1/2 + 2/5) + 85/100 + 74/10
= 7 + (5/10 + 4/10) + (85/100 + 740/100)
= 7 + 9/10 + 825/100
= 7 + 90/100 + 825/100
= 7 + 915/100
= 7 + 9 15/ 100
= 16 15/100
= 16 3/20

Semoga membantu
maaf kalau salah