Question

1)7 5/6+(-3 1/12)2)3 6/7+(-6 4/9)Решите срочно!!!!!! ​

Answer 1

Ответ:

Пошаговое объяснение:

1)7 5/6+(-3 1/12) = 7 10/12 - 3 1/12 = 4 9/12 = 4 3/4

2)3 6/7+(-6 4/9) = 3 54/63 - 6 28/63 = -2 37/63

Answer 2

1. To add mixed numbers, we first convert them into improper fractions, then perform the addition.

Let's start with 7 5/6: 7 is the whole number, and 5/6 is the fractional part. To convert it to an improper fraction, we multiply the whole number (7) by the denominator of the fraction (6), and then add the numerator (5). This gives us: 7 * 6 + 5 = 42 + 5 = 47 So, 7 5/6 as an improper fraction is 47/6.

Now let's convert -3 1/12: -3 is the whole number, and 1/12 is the fractional part. To convert it to an improper fraction, we multiply the whole number (-3) by the denominator of the fraction (12), and then add the numerator (1). This gives us: -3 * 12 + 1 = -36 + 1 = -35 So, -3 1/12 as an improper fraction is -35/12.

Now we can add the two improper fractions together: 47/6 + (-35/12)

To add fractions, we need to find a common denominator. In this case, the common denominator is 12 because it is a multiple of both 6 and 12.

Let's convert 47/6 to have a denominator of 12: To get a denominator of 12, we multiply both the numerator and denominator by 2: 47/6 * 2/2 = 94/12

Now we can add the fractions: 94/12 + (-35/12)

When the denominators are the same, we add the numerators: 94 + (-35) = 59

The sum is 59/12.

2. We'll follow the same steps as before.

3 6/7 as an improper fraction: 3 * 7 + 6 = 21 + 6 = 27 So, 3 6/7 as an improper fraction is 27/7.

-6 4/9 as an improper fraction: -6 * 9 + 4 = -54 + 4 = -50 So, -6 4/9 as an improper fraction is -50/9.

Now we can add the two improper fractions: 27/7 + (-50/9)

To add fractions, we need a common denominator. In this case, the common denominator is 63 because it is a multiple of both 7 and 9.

Let's convert 27/7 to have a denominator of 63: To get a denominator of 63, we multiply both the numerator and denominator by 9: 27/7 * 9/9 = 243/63

Now we can add the fractions: 243/63 + (-50/9)

When the denominators are the same, we add the numerators: 243 + (-50) = 193

The sum is 193/63.

Please note that the answers provided are in simplified form.