To solve this, we need to find a common denominator for both fractions.
5/7 - 4/8
First, we need to find a common denominator for 7 and 8, which is 56.
Rewrite the fractions with the common denominator:
(58)/(78) - (47)/(87) 40/56 - 28/56
Now subtract the two fractions:
40/56 - 28/56 = 12/56
Reduce the fraction:
12/56 = 3/14
Therefore, 5/7 - 4/8 = 3/14
Next part of the expression:
20/7 / и
This part is unclear as "и" does not represent a mathematical operation or value. If you can provide more information or clarification, I can continue to help with this calculation.
To solve this, we need to find a common denominator for both fractions.
5/7 - 4/8
First, we need to find a common denominator for 7 and 8, which is 56.
Rewrite the fractions with the common denominator:
(58)/(78) - (47)/(87)
40/56 - 28/56
Now subtract the two fractions:
40/56 - 28/56 = 12/56
Reduce the fraction:
12/56 = 3/14
Therefore, 5/7 - 4/8 = 3/14
Next part of the expression:
20/7 / и
This part is unclear as "и" does not represent a mathematical operation or value. If you can provide more information or clarification, I can continue to help with this calculation.