Question

(0,9*1 2/5-1,4^2):2 1/3

Answer 1

Решение внизу на фото

Answer 2

To solve the expression, follow the order of operations (PEMDAS):

1. Parentheses
2. Exponents
3. Multiplication and Division (from left to right)
4. Addition and Subtraction (from left to right)

Let's break down the expression step by step:

Step 1: Parentheses (0,9 * 1 2/5 - 1,4^2):2 1/3

Step 2: Exponents (0,9 * 1 2/5 - 1,4^2):2 1/3 (0,9 * 1 2/5 - 1,96):2 1/3

Step 3: Multiplication and Division (0,9 * 7/5 - 1,96):2 1/3 (0,9 * 1.4 - 1,96):2 1/3

Step 4: Continue Multiplication and Division (1.26 - 1,96):2 1/3 (-0.7):2 1/3

Step 5: Divide -0.7 by 2 1/3 To divide a number by a mixed fraction, convert the mixed fraction to an improper fraction and then perform the division.

Step 5.1: Convert the mixed fraction to an improper fraction: 2 1/3 = (2 * 3 + 1) / 3 = 7 / 3

Step 5.2: Perform the division: (-0.7) / (7/3) = (-0.7) * (3/7) = -2.1 / 7

The result is approximately -0.3 (rounded to one decimal place).