Помогите пожалуйста
1) (4,5:3/5+3,75)*2/9-2/3=
2) 5/8+1 1/2*(17/4:17)+3,75:5/6=
3) (1/2+0,125-1/6)*(6,4:80/3)+1/8=

№11) 4,5 : 3/5 = 4,5 : 0,6 = 7,5 2) 7,5 + 3,75 = 11,25 = 11  25/100 = 11  1/43)  11  1/4 * 2/9 = 45/4 * 2/9 = 5/24) 5/2 - 2/3 = 15/6 - 4/6 = 11/6 = 1  5/6--------------------------------------------------------№21) 17/4 : 17 = 1/42) 1 1/2 * 5/4 = 3/2 * 5/4 = 15/83) 3,75 : 5/6 = 3  3/4 : 5/6 = 15/4 : 5/6 = 9/24) 5/8 + 15/8 = 20/85) 20/8 + 9/2 = 20/8 + 36/8 = 56/8 = 7--------------------------------------------------------№31) 1/2 + 0,125 = 1/2 + 1/8 = 4/8 + 1/8 = 5/82) 5/8 - 1/6 = 15/24 - 4/24 = 11/243) 6,4 : 80/3 = 64/10 : 80/3 = 24/1004) 11/24 * 24/100 = 11/100 = 0,115)  0,11 + 1/8 = 0,11 + 0,125 = 0,235