jawab ya 2 no itu pake cara dan jalan nya

1. 2 1/4-3/4+1 1/5
9/4-3/4+6/5= 45-15+24/20
= 54/20
= 2 7/10 ( a )

2. 3/7×2,5:60/100

3/7×25/10=75/70
75/70:3/5(3/5 disederhanakan)= 75/70×5/3= 375/210
375/210= 1 11/14 (d)