gimana nih kak? beserta caranya ya....thanks

1)C cara:
3/4 × 18/18= 54/72
2)B cara: 42/48:2/2=21/24:3/3=7/8×125/125=875/1000=87,5%
3)D cara:
2 35/56:7/7=2 5/8=21/8×125/125=2625/1000=2,625
4)A cara: 67,5%=675/1000:5/5=135/200:5/5=27/40
5)B cara:
4,753=4753/1000=475,3%
6)D cara:
6914%=6914/100=69,14
7)A cara:
0,775=775/1000:5/5=155/200:5/5=31/40
8)sorry saya gak ngerti soal yang ini

semoga bermanfaat..