Question

(-6,3)-(+7 11/15)+(-3 11/20)-(+ 17/20)​

Answer 1

Ответ:

Пошаговое объяснение:

Шаг:1. Выполним сложение: -34+6 = -28

Стало: -28+12-17-3+20-5

Шаг:2. Выполним сложение: -28+12 = -16

Стало: -16-17-3+20-5

Шаг:3. Выполним вычитание: -16-17 = -33

Стало: -33-3+20-5

Шаг:4. Выполним вычитание: -33-3 = -36

Стало: -36+20-5

Шаг:5. Выполним сложение: -36+20 = -16

Стало: -16-5

Шаг:6. Выполним вычитание: -16-5 = -21

Стало: -21

Answer 2

To simplify the expression (-6,3)-(+7 11/15)+(-3 11/20)-(+ 17/20), we can break it down into smaller steps:

1. Start with (-6,3).

2. Add (-7 11/15) to it.

3. Subtract (-3 11/20).

4. Finally, subtract (+ 17/20).

Let's calculate each step:

1. (-6,3) remains the same.

2. (-6,3) + (-7 11/15) can be calculated as follows:

   -6,3 - 7,11/15 = (-6,3) + (-7,11/15) = (-6 + (-7)) + (3 + (-11/15)) = -13 + (3 - 11/15)

   Now, let's subtract 11/15 from 3:

   3 - 11/15 = (3 * 15/15) - 11/15 = (45/15) - (11/15) = 34/15

   So, (-6,3) + (-7 11/15) = -13 + 34/15 = (-13 * 15/15) + (34/15) = (-195/15) + (34/15) = (-195 + 34)/15 = -161/15

3. Now, we have -161/15 from the previous step, and we need to subtract (-3 11/20):

   -161/15 - (-3 11/20) can be calculated as follows:

   -161/15 + 3 11/20

   To add these fractions, we need a common denominator, which is 60:

   -161/15 + (3 * 20/20) + (11/20)

   Now, adjust the numerators:

   -161/15 + 60/20 + 11/20

   -161/15 + 71/20

   To add these fractions, we need a common denominator, which is 60:

   -161/15 + (71 * 3/3) * (20/20)

   -161/15 + 213/60

   Now, adjust the numerators:

   -161/15 + 213/60 = (-161 * 4/4) / 15 + 213/60 = (-644/60) + 213/60

   Now, we can subtract:

   (-644 + 213)/60 = -431/60

4. Finally, we have -431/60 from the previous step, and we need to subtract (+ 17/20):

   -431/60 - 17/20

   To subtract these fractions, we need a common denominator, which is 60:

   (-431/60) - (17 * 3/3) * (15/15)

   (-431/60) - (51/60)

   Now, subtract the numerators:

   (-431 - 51)/60 = -482/60

   Simplify the fraction:

   -482/60 = (-241 * 2)/(30 * 2) = -241/30

So, the simplified expression is:

(-6,3)-(+7 11/15)+(-3 11/20)-(+ 17/20) = -241/30