Tolong bantu saya Pake cara ya

1.) 25/100 × 16/10 + 475/100 = ((25 × 16) / (100 × 10)) + (475/100) = (400/1000) + (475/100) = 400/1000 + 4.750/1000 = 5.150/1000 = 5,15

2.) 4/10 + 5/8 : 3/4 = 4/10 + ( 5/8 × 4/3) = 4/10 + 20/24 = 48/120 + 100/120 = 148/120 = 37/30 = 1,2

3.) 12/7 : 3/4 + 8/5 = (12/7 × 4/3) + 8/5 = 48/21 + 8/5 = 240/105 + 168/105 = 408/105 = 3,9

4.) 1225/100 - (175/100 × 3/4) = 1225/100 - 525/400 = 4900/400 - 525/400 = 4375/400 = 10,9