Question

7 1/2:2 1/2*3 2/3-5 1/5*5/13*(1 1/2)троечка сверху

Answer 1

Ответ: ↓↓

7 1/2:2 = 15/2 : 2 = 15/2*1/2 = 15/4 = 3 3/4

1/2*3 = 1/2 * 3/1 = 3/2 = 1 1/2

2/3-5 = - 4 1/3

1/5*5/13*(1 1/2)³= 1/13 * (1 1/2)³= 1/13 * 1 1/2 * 1 1/2 = 1/13 * 9/4 = 9/52

Пошаговое объяснение: удачи в учёбе!

Answer 2

It seems like you've written a series of mixed fractions and operations. Let's break down the expression step by step:

1. 7 1/2: This is a mixed fraction representing 7 and a half, or 7.5.

2. 2 1/2 * 3 2/3: This involves multiplication between two mixed fractions. First, convert both mixed fractions into improper fractions:

   • 2 1/2 = 5/2
   • 3 2/3 = 11/3 Now, multiply these fractions: (5/2) * (11/3) = 55/6.

3. 5 1/5 * 5/13 * (1 1/2): This involves multiplication between three fractions. First, convert the mixed fraction to an improper fraction:

   • 1 1/2 = 3/2 Now multiply the fractions: (5 1/5) * (5/13) * (3/2). Convert 5 1/5 to an improper fraction: 26/5. Multiply: (26/5) * (5/13) * (3/2) = (78/10) * (5/13) = 390/130 = 3.

So, the expression simplifies to: 7.5 + 55/6 - 3.

Now, we need to convert 7.5 to a fraction to perform the addition:

• 7.5 = 15/2.

Now the expression becomes: (15/2) + (55/6) - 3.

To add these fractions, you need to find a common denominator:

• The least common multiple of 2 and 6 is 6.

So, convert the fractions to have a common denominator of 6:

• (15/2) = (45/6)
• (55/6) = (55/6)

Now the expression is: (45/6) + (55/6) - 3.

Combine the fractions: (45/6) + (55/6) = (100/6) = 50/3.

Finally, subtract 3: 50/3 - 3.

To subtract, convert 3 to a fraction with the same denominator as 50/3 (which is 3):

• 3 = 9/3.

Now, the expression becomes: 50/3 - 9/3 = (50 - 9)/3 = 41/3.

So, the final result of the expression is 41/3, which is approximately 13.67 when rounded to two decimal places.