Question

6*(0,4*-1 2/7-3)-4,5*(-1 2/7+2)

Answer 1

Ответ:

-20,1

Пошаговое объяснение:

6*(0,4*-1*2/7-3)-4,5*(-1*2/7+2) = 6*(2/5-2/7-3)-4,5(-1*2/7+2) = 6*(-101/35) - 9/2 + 12/7 = -606/35 - 9/2 + 12/7 = - 202/10 = -20,1

Answer 2

Ответ:

20.1 .......................

Answer 3

Let's simplify the given expression step by step:

1. First, perform the operations inside the parentheses: 0.4 * -1 = -0.4 2/7 - 3 = -19/7

2. Next, perform the multiplication: 6 * (-0.4 * -19/7) = 6 * (0.4 * 19/7) = 6 * (0.4 * 19) / 7 = 6 * 7.6 / 7

3. Now, perform the multiplication in the second part: -1 2/7 + 2 = -(1 + 2/7) + 2 = - (9/7) + 2 = (2 * 7 - 9) / 7 = 5/7

4. Finally, perform the last part of the expression: 4.5 * (5/7) = 22.5/7

Now, the final expression is: 6 * (7.6 / 7) - 22.5/7

To proceed, we need a common denominator, which is 7:

= (6 * 7.6 - 22.5) / 7

= (45.6 - 22.5) / 7

= 23.1 / 7

So, the simplified result of the expression is approximately 3.3 (rounded to one decimal place).