Question

-3/8+4/6= 2/9+(-1 5/6)= -9+2/9= -19,8+5 4/5= 12,75+(-12 3/4= 8,57+(-1 1/2

Answer 1

Ответ:

1)

$\frac{7}{24}$

2)

$- \frac{41}{18}$

3)

$- \frac{79}{9}$

4)25,6

5)3,75

6)3,07

Пошаговое объяснение:

фух

Answer 2

Let's simplify each of these expressions step by step:

1. -3/8 + 4/6: To add these fractions, we need a common denominator, which is 24. So, we'll convert both fractions: -3/8 = -9/24 4/6 = 8/24 Now, add them together: (-9/24) + (8/24) = (-1/24)

2. 2/9 + (-1 5/6): Convert the mixed number to an improper fraction: -1 5/6 = -6/6 - 5/6 = -11/6 Now, add them: (2/9) + (-11/6) To add these fractions, we need a common denominator, which is 18. So, we'll convert both fractions: (2/9) = (4/18) (-11/6) = (-33/18) Now, add them together: (4/18) + (-33/18) = (-29/18)

3. -9 + 2/9: To add a whole number and a fraction, convert the whole number to a fraction with the same denominator as the fraction: -9 = -9/1 Now, add them together: (-9/1) + (2/9) To add these fractions, we need a common denominator, which is 9. So, we'll convert both fractions: (-9/1) = (-81/9) (2/9) = (2/9) Now, add them together: (-81/9) + (2/9) = (-79/9)

4. -19 8/5: This is a mixed number. To add it to a fraction, convert the mixed number to an improper fraction: -19 8/5 = -5*(19) + 8/5 = -95/5 + 8/5 = (-87/5)

5. 12.75 + (-12 3/4): Convert the mixed number to a decimal: -12 3/4 = -12.75 (since 3/4 is equivalent to 0.75) Now, add them: 12.75 + (-12.75) = 0

6. 8.57 + (-1 1/2): Convert the mixed number to a decimal: -1 1/2 = -1.5 Now, add them: 8.57 + (-1.5) = 7.07

So, the simplified values for each expression are as follows:

1. -3/8 + 4/6 = -1/24
2. 2/9 + (-1 5/6) = -29/18
3. -9 + 2/9 = -79/9
4. -19 8/5 = -87/5
5. 12.75 + (-12 3/4) = 0
6. 8.57 + (-1 1/2) = 7.07