tolong bantu ya secepatnya no 3,4, 5 semuanya di jawab

3. 6 2/3 + 2 4/5 - 3 1/2
= 20/3 + 14/5 - 7/2
= 200/30 + 84/30 - 105/30
= 179/30 = 5 29/30

5.
4 1/4
=17/4 ×25/25
=425/100 (425%)a

4.
60%×2 4/5
=60/100×14/5
=12/100×14
=168/100
=1,68 d