Question

7 2/15-(1 5/6+2 1/2)=

Answer 1

Ответ:

2.8

Пошаговое объяснение:

7 2/15-(1 5/6+2 1/2)=7 2/15-4 1/3=2 4/5=2.8

Answer 2

To calculate this expression, you'll want to perform the operations step by step. First, let's add the fractions and mixed numbers inside the parentheses:

1. Add 1 5/6 and 2 1/2:

   1 5/6 + 2 1/2 = 8/6 + 5/2

Now, we need to find a common denominator to add these fractions. The common denominator is 6:

8/6 + 5/2 = (8/6) + (15/6)

2. Now, add the fractions with the common denominator:

   (8/6) + (15/6) = 23/6

Now, the expression becomes:

7 2/15 - 23/6

3. Convert 7 2/15 to an improper fraction:

   7 2/15 = (7 * 15 + 2) / 15 = 107/15

Now, the expression is:

107/15 - 23/6

4. To subtract these fractions, we need a common denominator. The least common multiple of 15 and 6 is 30:

   (107/15) - (23/6) = (107/15) - (23/6) * (5/5) = (107/15) - (115/30)

5. Subtract the fractions with the common denominator:

   (107/15) - (115/30) = (107/15) - (115/30) * (2/2) = (107/15) - (230/30)

6. Now, subtract the fractions:

   (107/15) - (230/30) = (107/15) - (115/15)

7. Finally, subtract the numerators:

   (107/15) - (115/15) = (107 - 115)/15 = -8/15

So, the final result is -8/15.