1.6/15×0,75÷18/30+0,5-7/12= 2.2 8/10÷8,4×4 8/10-1,3+5 1/6= 3.4 2/5+3,75÷(3,5-1 5/6) 4.5,25×3 3/7-7,5÷3 3/8=

Jawabannya:

Mapel. : Matematika
Bab. : Operasi Bilangan

Pembahasan:

1. 6/15 × 0,75 : 18/30 + 0,5 - 7/12
= 6/15 × 75/100 : 18/30 + 5/10 - 7/12
= 450/1500 : 18/30 + 5/10 - 7/12
= 25/50 + 5/10 - 7/12
= 150/300 + 150/300 - 175/300
= 300/300 - 175/300
= 125/300
= 25/60
= 5/12
Atau
= 0,416

2. 2 8/10 : 8,4 × 4 8/10 - 1,3 + 5 1/6
= 28/10 : 84/10 × 48/10 - 13/10 + 31/6
= 28/10 : 4032/100 - 13/10 + 31/6
= 144/10 - 13/10 + 31/6
= 432/30 - 39/30 + 155/30
= 393/30 + 155/30
= 548/30
= 274/15
= 18 4/15
Atau
= 18,266

3. 4 2/5 + 3,75 : (3,5 - 1 5/6)
= 22/5 + 375/100 : (35/10 - 11/6)
= 22/5 + 375/100 : (105/30 - 55/30)
= 22/5 + 375/100 : 50/30
= 22/5 + 375/100 × 30/50
= 22/5 + 11250/5000
= 22000/5000 + 11250/5000
= 33250/5000
= 1330/200
= 266/40
= 133/20
= 6 13/20
Atau
= 6,65

4. 5,25 × 3 3/7 - 7,5 : 3 3/8
= 525/100 × 24/7 - 75/10 : 27/8
= 525/100 × 24/7 - 75/10 × 8/27
= 12600/700 - 600/270
= 18 - 2,22
= 15,78

# Maaf Kalo Salah