Question

-11,5 + (-6,8 +3 1/5)

Answer 1

Ответ:

Пошаговое объяснение:

-11,5+(-6,8+3 1/5)= -11,5+ (-6,8+3,2)= -11,5+(-3,6)= -15,1

Answer 2

To simplify the expression -11.5 + (-6.8 + 3 1/5), we'll begin by adding the numbers within parentheses first and then combine the two resulting values.

Let's calculate the sum within the parentheses first: -6.8 + 3 1/5.

To add -6.8 and 3, we ignore the fractional part of 3 1/5 and add the whole numbers: -6.8 + 3 = -3.8.

Next, we add the fractional parts: 1/5.

To add 1/5 to -3.8, we need to find a common denominator. The common denominator of 5 and 1 is 5.

1/5 can be written as 1 * (5/5) = 5/5. Now we can add:

-3.8 + 5/5 = -3.8 + 1 = -2.8.

So, the sum within the parentheses is -2.8.

Now, we can substitute the sum back into the original expression:

-11.5 + (-2.8).

To add these two values, we simply combine them:

-11.5 + (-2.8) = -14.3.

Therefore, -11.5 + (-6.8 + 3 1/5) equals -14.3.