Question

-5 1/2+(-2 3/4)=-8,25

Answer 1

1. Решение в обыкновенных дробях
- 5 1/2 + (- 2 3/4) = - 5 2/4 - 2 3/4 = - 7 5/4 = - 8 1/4

2. Решение в десятичных дробях
1/2 = 5/10 = 0,5          3/4 = 75/100 = 0,75
- 5 1/2 + (- 2 3/4) = - 5,5 - 2,75 = - 8,25

Answer 2

The expression you provided is a subtraction of two mixed numbers:

-5 1/2 - 2 3/4

To calculate this, you first need to subtract the whole numbers and then subtract the fractions separately:

-5 - 2 = -7 (for the whole numbers) 1/2 - 3/4 = 2/4 - 3/4 = -1/4 (for the fractions)

Now, combine the whole number and fraction results:

-7 - 1/4 = -7 1/4

So, the result is -7 1/4, not -8.25.