Question

1) -7+(-18)+12+(-5)+9= 2)-12+15+(-6)+12= 3)16+(-20)+14+(-10)= 4)13+(-9)+(-17)+19= 5)-54+(-0,7)+0,56+(-1,71)= 6)1/4(-1 1/4)+4 3/8+(-6 1/4)= Обяснення: шостого завдання: у душках одна ціла одна четверта+ чотири цілі три восьмі+Шість цілих одна десята

Answer 1

Ответ:

Пошаговое объяснение:

1) -16

2) 9

3) 0

4) 6

5) -55,85

6) 4 3/8

Answer 2

Пошаговое объяснение:

Даю просто ответы

1) -9

2) 9

3) 0

4) 6

5) -55.85

6) 4 3/8

Answer 3

Let's solve each of the given expressions:

1. $-7 + (-18) + 12 + (-5) + 9$

Combine like terms:

$(-7) + (-18) + 12 + (-5) + 9 = -7 - 18 + 12 - 5 + 9 = -9$

So, the answer is $-9$.

2. $-12 + 15 + (-6) + 12$

Combine like terms:

$(-12) + 15 + (-6) + 12 = -12 - 6 + 15 + 12 = 9$

So, the answer is $9$.

3. $16 + (-20) + 14 + (-10)$

Combine like terms:

$16 + (-20) + 14 + (-10) = 16 - 20 + 14 - 10 = 0$

So, the answer is $0$.

4. $13 + (-9) + (-17) + 19$

Combine like terms:

$13 + (-9) + (-17) + 19 = 13 - 9 - 17 + 19 = 6$

So, the answer is $6$.

5. $-54 + (-0.7) + 0.56 + (-1.71)$

Combine like terms:

$-54 + (-0.7) + 0.56 + (-1.71) = -54 - 0.7 + 0.56 - 1.71 = -56.85$

So, the answer is $-56.85$.

6. $\frac{1}{4} \left(-1 \frac{1}{4}\right) + 4 \frac{3}{8} + (-6 \frac{1}{4})$

First, let's convert the mixed numbers to improper fractions:

$\frac{1}{4} \left(-1 \frac{1}{4}\right) + 4 \frac{3}{8} + (-6 \frac{1}{4})$

$= \frac{1}{4} \left(-\frac{5}{4}\right) + \frac{35}{8} - \frac{25}{4}$

Combine like terms:

$= -\frac{5}{16} + \frac{35}{8} - \frac{25}{4}$

To combine these fractions, find a common denominator:

$= -\frac{5}{16} + \frac{35}{8} - \frac{100}{16}$

Combine:

$= -\frac{5}{16} + \frac{35 - 100}{16}$

$= -\frac{5}{16} - \frac{65}{16}$

$= -\frac{70}{16}$

Reduce the fraction:

$= -\frac{35}{8}$

So, the answer is $-\frac{35}{8}$.