Question

4:4целых4/5+2целых2/7x5целых1/4-7целых11/12

Answer 1

Ответ:

Пошаговое объяснение:

4:4 4/5=4*5/24=30

2 2/7*5 1/4=16/7*21/4=12

30+12=42

42-7 11/12=34 1/12

Answer 2

ОТВЕТ:

ПОШАГОВОЕ ОБЬЯСНЕНИЕ:

Answer 3

To solve the expression, let's break it down step by step:

Step 1: Simplify the fractions within the expression.

4/5 + 2/7 x 5 1/4 - 7 11/12

Convert all the mixed fractions to improper fractions:

4/5 + 2/7 x 21/4 - 7 11/12

Step 2: Perform the multiplication operation.

4/5 + (2/7 x 21/4) - 7 11/12

Multiply the numerators together and the denominators together:

4/5 + (2 x 21) / (7 x 4) - 7 11/12

4/5 + 42/28 - 7 11/12

Step 3: Simplify the fractions and mixed numbers.

4/5 + 3/2 - 7 11/12

To add fractions, we need a common denominator. The common denominator here is 60.

Multiply the first fraction by 12/12 and the second fraction by 30/30:

(4 x 12) / (5 x 12) + (3 x 30) / (2 x 30) - 7 11/12

48/60 + 90/60 - 7 11/12

Combine the fractions:

(48 + 90)/60 - 7 11/12

138/60 - 7 11/12

To subtract the mixed number, we need to convert it to an improper fraction.

(138/60) - (7 x 12 + 11)/12

138/60 - 95/12

Step 4: Find a common denominator for the fractions.

The common denominator is 60:

(138 x 5) / (60 x 5) - (95 x 5)/ (12 x 5)

690/300 - 475/60

Step 5: Subtract the fractions.

(690 - 475)/300

215/300

The simplified form of the expression 4:4целых4/5+2целых2/7x5целых1/4-7целых11/12 is 215/300.