Question

1.2/3+(-7/8)+5/6+(-7/12) 2.минус две целых три седьмых плюс восемь целых девять четырнадцатых плюс скобка открывается минус пять целых пять двадцать первых скобка закрывается.

Answer 1

2/3+(-7/8)+5/6+(-7/12)= 4/6+5/6+(-21/24)+(-14/24)=9/6+(-(21/24+14/24))=9/6+(-35/24)=36/24+(-35/24)=1/24
-2 3/7+8 9/4+(-5 5/21)=-17/7+41/4+(-110/21)=-127/21+41/4=353/84=4 17/84
надеюсь я вам помогла

Answer 2

1. To add these fractions, you can find a common denominator and then add the numerators:

(1/2) + (-7/8) + (5/6) + (-7/12)

First, find a common denominator for these fractions, which is 24:

(12/24) + (-21/24) + (20/24) + (-14/24)

Now, add the numerators:

(12 - 21 + 20 - 14) / 24 = (-3) / 24

To simplify, you can reduce the fraction by dividing both the numerator and denominator by their greatest common divisor, which is 3:

(-3 / 3) / (24 / 3) = (-1 / 8)

So, the result is -1/8.

2. To calculate the expression in Russian:

Минус две целых три седьмых плюс восемь целых девять четырнадцатых плюс (минус пять целых пять двадцать первых)

-2 3/7 + 8 9/14 + (-5 5/21)

First, find a common denominator for the fractions:

Convert 3/7 to an equivalent fraction with a denominator of 14:

3/7 = (3/7) * (2/2) = 6/14

Now, the expression becomes:

-2 6/14 + 8 9/14 + (-5 5/21)

Now, add the whole numbers:

-2 + 8 - 5 = 1

Now, add the fractions:

6/14 + 9/14 - 5/21

Find a common denominator for these fractions, which is 42:

(18/42) + (27/42) - (10/42)

Now, add the fractions:

(18 + 27 - 10) / 42 = 35/42

So, the result is:

1 + 35/42, which can be simplified further if needed.