Question

А) (2/5+(-0,5))+(-1 1/4)б) (0,6+2/3)+(-2 1/15)​

Answer 1

Ответ:

На фото

Отметь как лучший ответ, спасибо

Answer 2

To simplify the given expressions, let's convert the mixed numbers into improper fractions.

a) (2/5 + (-0.5)) + (-1 1/4)

First, convert -1 1/4 to an improper fraction: -1 1/4 = -1 - 1/4 = -4/4 - 1/4 = -5/4

Now, simplify the expression: (2/5 + (-0.5)) + (-5/4)

To add fractions, we need a common denominator. In this case, the common denominator is 20. (2/5 + (-0.5)) + (-5/4) = (8/20 + (-10/20)) + (-25/20)

Now, add the fractions: (8/20 + (-10/20)) + (-25/20) = (-2/20) + (-25/20) = -27/20

Therefore, the simplified value of (2/5 + (-0.5)) + (-1 1/4) is -27/20.

b) (0.6 + 2/3) + (-2 1/15)

First, convert -2 1/15 to an improper fraction: -2 1/15 = -2 - 1/15 = -30/15 - 1/15 = -31/15

Now, simplify the expression: (0.6 + 2/3) + (-31/15)

To add fractions, we need a common denominator. In this case, the common denominator is 15. (0.6 + 2/3) + (-31/15) = (9/15 + 10/15) + (-31/15)

Now, add the fractions: (9/15 + 10/15) + (-31/15) = (19/15) + (-31/15) = -12/15

Simplify the resulting fraction: -12/15 = -4/5

Therefore, the simplified value of (0.6 + 2/3) + (-2 1/15) is -4/5.