Question

(12 1/4+1/2)+(11 4/5-7)

Answer 1

Ответ:

Пошаговое объяснение:

12 1/4+1/2=12 1/4+2/4=12 3/4

11 4/5-7=4 4/5

12 3/4+4 4/5=12 15/20+4 16/20=

17 11/20

Answer 2

$12 \frac{1}{4} + \frac{1}{2} = 12 \frac{1}{4} + \frac{2}{4} = 12 \frac{3}{4} \\ 11 \frac{4}{5} - 7 = 4 \frac{4}{5} \\ 12 \frac{3}{4} + 4 \ \frac{4}{5} = 12 \frac{15}{20} + 4 \frac{16}{20} = 17 \frac{11}{20}$

Answer 3

To calculate the expression (12 1/4 + 1/2) + (11 4/5 - 7), you should first simplify each of the components separately and then add them together.

1. Calculate 12 1/4 + 1/2: 12 1/4 is equivalent to 49/4 (since 12 * 4 + 1 = 49), so you have: 49/4 + 1/2

2. Calculate 11 4/5 - 7: 11 4/5 is equivalent to 59/5 (since 11 * 5 + 4 = 59), so you have: 59/5 - 7

Now, perform the calculations:

1. 49/4 + 1/2 = (49/4) + (2/4) = 51/4

2. 59/5 - 7 = (59/5) - (35/5) = 24/5

Now, add the results:

(51/4) + (24/5)

To add these fractions, you need a common denominator, which is 20. So, you'll need to convert both fractions to have a denominator of 20:

For 51/4: (51/4) * (5/5) = 255/20

For 24/5: (24/5) * (4/4) = 96/20

Now, you can add them:

(255/20) + (96/20) = 351/20

So, the final result is 351/20. If you want to express it as a mixed number, it would be 17 11/20.