Question

-1 7/8+(-2 3/4) = срочно!!

Answer 1

Відповідь:

-4  5/8

Покрокове пояснення:

++=+

--=+

-+=-

+-=-

-1 7/8+(-2 3/4)= -1 7/8 -2 3/4=  -3 -  7/8  -  3/4  = -3 -  (7 · 1)/8   -   (3 · 2)/8=

 = -3 -   7/8  -   6/8= - 3 -   (7 + 6 )/8=  = - 3 -   13/8  = - 3 -   (1·8 + 5)/8=

 = -4  5/8

Answer 2

Ответ:

-4 5/8

Пошаговое объяснение:

Answer 3

To calculate $-1 \frac{7}{8} + (-2 \frac{3}{4})$, we first need to convert the mixed numbers to improper fractions and then perform the addition:

1. Convert $-1 \frac{7}{8}$ to an improper fraction: $-1 \frac{7}{8} = -\left(1 + \frac{7}{8}\right) = -\left(\frac{8}{8} + \frac{7}{8}\right) = -\frac{15}{8}$

2. Convert $-2 \frac{3}{4}$ to an improper fraction: $-2 \frac{3}{4} = -\left(2 + \frac{3}{4}\right) = -\left(\frac{8}{4} + \frac{3}{4}\right) = -\frac{11}{4}$

3. Add the fractions: $-\frac{15}{8} + \left(-\frac{11}{4}\right)$ To add fractions with different denominators, we need to find a common denominator. The least common multiple (LCM) of 8 and 4 is 8. So, we'll rewrite the fractions with a denominator of 8: $-\frac{15}{8} = -\frac{15 \times 1}{8 \times 1} = -\frac{15}{8}$ $-\frac{11}{4} = -\frac{11 \times 2}{4 \times 2} = -\frac{22}{8}$

   Now, we can add the fractions: $-\frac{15}{8} - \frac{22}{8} = -\frac{37}{8}$

So, $-1 \frac{7}{8} + (-2 \frac{3}{4}) = -\frac{37}{8}$.