Вычислим значение выражения по действиям:
1) 1 1/12+1 1/4 = 1+ 1+ 1/12 + 1/4 = 2 + 1/12 + 3/12 = 2 + 4/12 = 2 + 1/3 = 2 1/3
2) 2 1/3 * 1 19/56 = 7/3 * 75/56 = (7* 75) /(3 * 56) = 75/(3 * 8) = 25/8 = 3,125
3) 2 5/8*1 3/7*1 1/9 = 21/8 * 10/7 * 10/9 = (21*10*10)/(8*7*9) = (3*5*5)/(2*9) = 25/6 = 4 1/6
(1 1/12+1 1/4)*1 19/56+2 5/8*1 3/7*1 1/9 = 4 1/6
Ответ: 4 1/6
They are <span>burgers.
</span>They are oranges.
They are bananas.
They are apples.
They are <span>biscuits.</span>
What lesson were you having at 11 am? I was having math at 11 am. Where were you eating at lunch time? I was eating at home at lunch time. Where were you going at 2 pm? I was going to the cinema at 2 pm. What were you doing at 5 pm? I was doing my homework at 5 pm.
Можеш по ближе сатографировать
3.
A: a bag, a pencil -case, a cell phone, a copy book, a book.
An: an umbrella , an apple, an eraser, an orange, an English dictionary .
4.
b) Those are my friends over there.
c) This is your hat here.
d) These are his shoes.
e) Those are her children.
f) This is my dog in the garden .
g) Those are our classmates over there.
h) That's your phone.
i) This is my friend.