3/4:9/16-5/8*4/15
20/27*3/5+1/10:3/100
7/16+9/10*5/14*7/12
1-9/16:2 1/4-1/12
Помогите плиз ! Если можно то с объяснением !

3/4÷9/16-5/8×4/15=3/4×16/9-1/6=
=4/3-1/6=8/6-1/6=7/6=1 1/6
₩₩₩₩₩
20/27×3/5 +1/10÷3/100=4/9+1/10×100/3=
=4/9+10/3=4/9+30/9=34/9=3 7/9
₩₩₩₩₩
7/16+9/10×5/14×7/12=7/16 + 3/16=10/16=5/8
₩₩₩₩₩
1- 9/16÷2 1/4-1/12=1 -9/16÷9/4 -1/12=
=1- 9/16×4/9 -1/12=1-1/12-1/4=
=12/12-1/12-3/12=8/12=2/3