Question

2 3/4 - (-1 1/2)+(-3 5/6)

Answer 1

2 3/4 - (-1 1/2)+(-3 5/6)=
2\34+1 1\2-3 5\6-прибавляем потому-что 2 минуса,дают "+".
1)3 5\4-3 5\6=3 15\12.
2)3 5\12-10\12=5\12.

Answer 2

To calculate the expression, you need to perform addition and subtraction of mixed numbers. Let's break it down step by step:

Step 1: Convert all mixed numbers to improper fractions.

2 3/4 = (2 * 4 + 3) / 4 = 11/4 -1 1/2 = (-1 * 2 + 1) / 2 = -1/2 -3 5/6 = (-3 * 6 + 5) / 6 = -13/6

Step 2: Perform the addition and subtraction.

2 3/4 - (-1 1/2) + (-3 5/6) = 11/4 - (-1/2) - 13/6

Step 3: To add or subtract fractions, you need a common denominator. The least common multiple (LCM) of 4 and 6 is 12.

Now, convert each fraction to have a denominator of 12:

(11/4) * (3/3) = 33/12 (-1/2) * (6/6) = -6/12 (-13/6) * (2/2) = -26/12

Step 4: Perform the addition and subtraction:

33/12 - (-6/12) - 26/12 = 33/12 + 6/12 - 26/12

Step 5: Combine the numerators:

33 + 6 - 26 = 13

Step 6: The resulting fraction is 13/12.

However, we should simplify this fraction. 13 is greater than 12, so it can be expressed as a mixed number:

13 ÷ 12 = 1 with a remainder of 1.

So, the final answer is:

1 1/12