Question

1 4/7 p + 2 3/4 , при p= 7

Answer 1

Ответ:

13 3/4

Пошаговое объяснение:

1 4/7 p + 2 3/4= 11/7p+2 3/4

при p= 7  11/7p+11/4= 11/7×7+2 3/4= 11+2 3/4=13 3/4

Answer 2

To evaluate the expression 1 4/7 p + 2 3/4 when p = 7, we can substitute the value of p into the expression and simplify it.

First, let's convert the mixed numbers to improper fractions:

1 4/7 = (7 * 1 + 4) / 7 = 11/7 2 3/4 = (4 * 2 + 3) / 4 = 11/4

Now we substitute p = 7 into the expression:

11/7 * 7 + 11/4

To multiply fractions, we multiply the numerators together and the denominators together:

(11 * 7) / (7 * 1) + (11/4)

= 77/7 + 11/4

Next, we need to find a common denominator to add the fractions. The least common multiple (LCM) of 7 and 4 is 28:

(77/7) * (4/4) + (11/4) * (7/7)

= 308/28 + 77/28

Now that the fractions have the same denominator, we can add them:

(308 + 77) / 28

= 385/28

So, when p = 7, the expression 1 4/7 p + 2 3/4 evaluates to 385/28.