Question

2,5+(a-2 2/3),если a =4 5/6

Answer 1

Ответ:

$2.5 + (a - 2 \frac{2}{3} )$

Если:

$a = 4 \frac{5}{6}$

Подставляем значение:

$2.5 + (4 \frac{5}{6} - 2 \frac{2}{3})$

Переводим дробь 4 5/6 и дробь 2 2/3:

$\frac{5}{2} + ( \frac{29}{6} - \frac{8}{3} )$

Вычитаем дроби (29/6-8/3):

$\frac{5}{2} + \frac{13}{6}$

Ответ:

$\frac{14}{3}$

Answer 2

To solve the expression 2.5 + (a - 2 2/3) when a = 4 5/6, we substitute the value of a into the expression and perform the necessary calculations.

First, let's convert the mixed number 4 5/6 to an improper fraction:

4 5/6 = (4 * 6 + 5) / 6 = 29/6

Now, we substitute the value of a into the expression:

2.5 + (4 5/6 - 2 2/3)

Next, we simplify the expressions inside the parentheses:

4 5/6 - 2 2/3 = 29/6 - 8/3

To subtract the fractions, we need to find a common denominator, which is 6:

29/6 - 8/3 = (29/6) - (8/3) = (29/6) - (16/6)

Now, we can subtract the fractions:

(29/6) - (16/6) = 13/6

Finally, we add 2.5 to the result:

2.5 + (4 5/6 - 2 2/3) = 2.5 + (13/6) = 2.5 + 13/6

To add the fractions, we need to find a common denominator, which is 6:

2.5 + 13/6 = (2.5 * 6/6) + (13/6) = 15/6 + 13/6

Now, we can add the fractions:

(15/6) + (13/6) = 28/6

Simplifying the fraction:

28/6 = 14/3

Therefore, 2.5 + (a - 2 2/3), when a = 4 5/6, is equal to 14/3 or 4 2/3.