Please please please please please please please please Tolonginnnn nomor 15 - 21 yaa,pake caraa Makasihh

no 15. 1 3/4 - 3/2 + 2,05 - 1,85 = 7/4 - 3/2 + 0,2 = 7/4 - 6/4 + 0,2 = 1/4 + 0,2 = 0,25 + 0,2 = 0,45 cm

no 17. 3.600 gr + (15 ons x 8) = 3600 gr + 120 ons
3600 gr = 3,6 kg
120 ons = 12 kg

3,6kg + 12kg = 15,6 kg