Question

30•2,9-2,9•28•2,7-2,7•26+26•2,5-2,5•24-24•2,3-2,3•22=

Answer 1

Ответ:

1) 30*2,9 = 87

2) 2,9*28*2,7 = 219,24

3) 2,7*26 = 70,2

4) 26*2,5 = 65

5) 2,5*24 = 60

6) 24*2,3 = 55,2

7) 2,3*22 = 50,6

8) 87-219,24-70,2+65-60-55,2-50,6 = -303,24

Удачи :)

Answer 2

To solve this expression, you should follow the order of operations (PEMDAS/BODMAS: Parentheses/Brackets, Exponents/Orders, Multiplication and Division, Addition and Subtraction) to ensure the correct result.

Let's break down the expression:

$30 \cdot 2,9 - 2,9 \cdot 28 \cdot 2,7 - 2,7 \cdot 26 + 26 \cdot 2,5 - 2,5 \cdot 24 - 24 \cdot 2,3 - 2,3 \cdot 22.$

1. Perform multiplication and division from left to right:

$30 \cdot 2,9 = 87.$

$2,9 \cdot 28 \cdot 2,7 = 216,36.$

$2,7 \cdot 26 = 70,2.$

$26 \cdot 2,5 = 65.$

$2,5 \cdot 24 = 60.$

$24 \cdot 2,3 = 55,2.$

$2,3 \cdot 22 = 50,6.$

2. Substitute these results back into the original expression:

$87 - 216,36 - 70,2 + 65 - 60 - 55,2 - 50,6.$

3. Combine like terms:

$-250.16.$

So, the result of the given expression is $-250.16$.