Question

Помогите пожалуйста решить. вычислите по действиям. (2,6 умнож.0,3-2 4/15:5 2/3):(-1,9) /- черта дроби

Answer 1

(2,6 *0,3-2 4/15:5 2/3):(-1,9)=-0,2
по действиям
2,6*0,3=0,78
2 4/15: 5 2/3=34/15:17/3=34/15*3/17=2/15*3/1=2/5*1/1=2/5=0,4
0,78-0,4=0,38
0,38:(-1,9)=-0,2

Answer 2

Calculation of the Expression

To solve the given expression, we need to follow the order of operations (PEMDAS - Parentheses, Exponents, Multiplication and Division, Addition and Subtraction) to ensure the correct result.

The given expression is: (2.6 * 0.3 - 2 + 4/15 : 5 + 2/3) / (-1.9)

Let's break it down step by step:

1. Multiplication and Division - 2.6 * 0.3 = 0.78 - 4/15 : 5 = 0.1333 (rounded to 4 decimal places) - 2/3 = 0.6667 (rounded to 4 decimal places) 2. Addition and Subtraction - 0.78 - 2 + 0.1333 + 0.6667 = -0.42 (rounded to 2 decimal places)

3. Division - -0.42 / (-1.9) = 0.2211 (rounded to 4 decimal places)

Final Result

The result of the given expression (2.6 * 0.3 - 2 + 4/15 : 5 + 2/3) / (-1.9) is approximately 0.2211 (rounded to 4 decimal places).