Question

-2,3x0,1+35x(-0,01)-(-2,1)= (2,8-4,3+1,7-3,7+5,1)x(-13)=

Answer 1

1]-2,3*0,1+35*(-0,01)-(-2,1)=1,52

1)-2,3*0,1=-2 3/10*1/10=-23/10*1/10=-23/100=-0,23

2)35(-0,01)=35(-1/100)=-35/100=-0,35

3)-0,23+(-0,35)=-0,23-0,35=-0,58

4)-0,58-(-2,1)=-0,58+2,1=-58/100+2 1/10=-58/100+21/10=-58/100+210/100=152/100=1 52/100=1,52

Ответ:1,52

2](2,8-4,3+1,7-3,7+5,1)*(-13)=-20,8

1)2,8-4,3=-1,5

2)-1,5+1,7=0,2

3)0,2-3,7=-3,5

4)-3,5+5,1=1,6

5)1,6(-13)=1 6/10(-13)=16/10(-13)=(-13*16)/10=-20,8

Ответ:-20,8

Answer 2

1.первому делаем умножение.

-2.3×0.1=-0.23

35×(-0.01)=-0.35

-0.23+(-0.35)-(-2.1)=1.52

решаем то что в скобках.

2.8-4.3=-1.5

-1.5+1.7=0.2

0.2-3.7=-3.5

-3.5+5.1=1.6

ТЕПЕРЬ УМНОЖЕНИЕ

1.6×(-13)=-20.8

Answer 3

Let's solve the given expression step by step:

1. -2 + 3 * 0.1 + 35 * (-0.01) - (-2.1)

First, we perform the operations inside the parentheses: -2 + 3 * 0.1 + 35 * (-0.01) + 2.1

Next, we simplify the multiplication and addition/subtraction: -2 + 0.3 - 0.35 + 2.1

Now, combine like terms: (0.3 - 0.35) + (-2 + 2.1)

Evaluate the expressions in parentheses: -0.05 + 0.1

Finally, add the terms together: -0.05

So, the result of the first part of the expression is -0.05.

2. (2.8 - 4.3 + 1.7 - 3.7 + 5.1) * (-13)

First, combine like terms: (2.8 - 4.3 + 1.7 - 3.7 + 5.1) * (-13)

Now, perform the addition and subtraction inside the parentheses: (6.6 - 8) * (-13)

Next, subtract: (-1.4) * (-13)

Finally, multiply: 18.2

So, the result of the second part of the expression is 18.2.

Now, let's multiply the results from the first and second parts of the expression:

-0.05 * 18.2

The product of these two values is:

-0.91

Therefore, the final result of the given expression is -0.91.