Question

А)-7,5-(-3,7)= Б)-2,3-6,2= В)7целых1/4-8целых2/9= Г)-8 целых5/12-(-7целых13/15)= Помогите пожалуйста .

Answer 1

1)-7,5-(-3,7)=-7,5+3,7=-3,8
2)-2,3-6,2=-8,5
3)7 целых1/4-8целых2/9= 29/4-74/9=-35/36
4)-8целых5/12-(-7целых13/15) =-11/20

Answer 2

A) -7.5 - (-3.7)

To solve this expression, we can simplify it step by step:

-7.5 - (-3.7) = -7.5 + 3.7

To add these two numbers, we align the decimal points and perform the subtraction:

   -7.5
+   3.7
-------
  -3.8

Therefore, -7.5 - (-3.7) equals -3.8.

B) -2.3 - 6.2

Similarly, we can solve this expression by subtracting the two numbers:

-2.3 - 6.2 = -8.5

Therefore, -2.3 - 6.2 equals -8.5.

В) 7 целых 1/4 - 8 целых 2/9

To solve this expression, we need to subtract the whole numbers and the fractions separately:

Whole numbers: 7 - 8 = -1

Fractions: 1/4 - 2/9

To subtract fractions, we need to find a common denominator. In this case, the common denominator is 36:

1/4 = 9/36 2/9 = 8/36

Now we can subtract the fractions:

9/36 - 8/36 = 1/36

Putting it all together, 7 целых 1/4 - 8 целых 2/9 equals -1 целая 1/36.

Г) -8 + целых 5/12 - (-7 целых 13/15)

To solve this expression, we need to simplify it step by step:

-8 + целых 5/12 + 7 целых 13/15

First, let's add the whole numbers: -8 + 7 = -1

Next, let's add the fractions. To do this, we need to find a common denominator. In this case, the common denominator is 60:

5/12 = 25/60 13/15 = 52/60

Now we can add the fractions:

25/60 + 52/60 = 77/60

Putting it all together, -8 + целых 5/12 - (-7 целых 13/15) equals -1 целая 17/60.

I hope this helps! Let me know if you have any further questions.