1/4х4 3/4х16/57+(4 3/4+1 2/3)х16/21+2 2/27х4 1/2=
(4/5+1/6)х(23 2/3-15 5/9)х45/58-1/2=
11,3у-(9,7у-0,8у)+7,4=17
Помогите пожалуйста.СРОЧНО.Пожалуйста

1lena stayed in bed in the morning because....

a)she didn"t want to get up early

b)she didn"t feel well

c)she didn"t have to go to school

2 lena"s mother decided to bring her lemon tea becouse....

a) lena had summer holidays

b)lena had a lot to do

c)lena had a sore throat

please

помогите пожалуйста очень надо

заранее спасибо