Question

7,7+6 7/9+(-4,7)+(-6 5/9)=

Answer 1

1)77/10+61/9-4,7- 6 5/9
2)77/10+61/9-47/10/-59/9
Ответ: 29/9
Альтернативный вид: 3 2/9 , 3.2

Answer 2

To solve the given expressions:

1. 7.7 + 6 To add these two numbers, we simply add the decimal parts and the whole numbers separately: 7.7 + 6 = 13.7

2. 7/9 + (-4.7) + (-6 5/9) To add or subtract mixed numbers, we need to convert them to improper fractions. Let's convert -6 5/9 to an improper fraction first: -6 5/9 = -59/9

Now, we can add the fractions: 7/9 + (-4.7) + (-59/9)

To add fractions, we need a common denominator. The common denominator for 9 and 9 is 9. Let's convert -4.7 to a fraction with a denominator of 9: -4.7 = -4 - (7/10) = -40/10 - 7/10 = -47/10

Now we can rewrite the expression: 7/9 + (-47/10) + (-59/9)

To add these fractions, we need to find a common denominator for 9 and 10, which is 90: (7/9)(10/10) + (-47/10)(9/9) + (-59/9)*(10/10) = 70/90 + (-423/90) + (-590/90)

Now we can add the fractions: 70/90 + (-423/90) + (-590/90) = (70 - 423 - 590)/90 = -943/90

Simplifying the fraction, we get: -943/90 = -104.78

Therefore, the final result is approximately -104.78.