tolong ya pake cara pliss

1.
2,2 : 125% - 1 1/4
= 22/10 x 100/125 - 5/4
= 220/125 - 5/4
= 44/25 - 5/4
= 176/100 - 125/100
= 51/100
= 0,51
jawaban C

2.
475/1000 + 625/100 x 7/5
= 475/1000 + 4.375/500
= 475/1000 + 8.750/1000
= 9.225 / 1000
= 9 225/1000
= 9 9/40

jawaban D