Question

4,5•(3 4/9-2 2/3•2 5/8)

Answer 1

Ответ:

Пошаговое объяснение:

2 2/3*2 5/8=8/3*21/8=7

3 4/9-7=-3 5/9

4,5*(-3 5/9)=9/2*(-32/9)=-16

Answer 2

Ответ:

Решение во вложении на фото.

Answer 3

To simplify the expression 4.5 * (3 4/9 - 2 2/3 * 2 5/8), you can follow these steps:

Step 1: Convert mixed numbers to improper fractions.

• 3 4/9 can be converted to (3 * 9 + 4) / 9 = 31/9.
• 2 2/3 can be converted to (2 * 3 + 2) / 3 = 8/3.
• 2 5/8 can be converted to (2 * 8 + 5) / 8 = 21/8.

Now, the expression becomes 4.5 * (31/9 - 8/3 * 21/8).

Step 2: Perform the multiplications and subtractions within the parentheses.

• 8/3 * 21/8 = (8 * 21) / (3 * 8) = 168/24 = 7/1.
• Now, the expression is 4.5 * (31/9 - 7).

Step 3: Subtract 7 from 31/9.

• To subtract a whole number from a fraction, you need to have a common denominator. In this case, the common denominator is 9.
• 31/9 - 7 = (31/9 - 63/9) = (31 - 63)/9 = -32/9.

Now, the expression is 4.5 * (-32/9).

Step 4: Multiply 4.5 by -32/9.

• (4.5 * -32)/9 = -144/9 = -16.

So, the simplified value of the expression is -16.