Question

(-1.5)+(3 4/5)+(-8 3/20)

Answer 1

Ответ:

правельный ответ -5,85 да это правельно

Answer 2

To add the given numbers, let's convert all the mixed numbers into improper fractions first:

-1.5 = -1 - 1/2 = -2/2 - 1/2 = -3/2 3 4/5 = 3 + 4/5 = 15/5 + 4/5 = 19/5 -8 3/20 = -8 - 3/20 = -160/20 - 3/20 = -163/20

Now, we can add the fractions:

(-3/2) + (19/5) + (-163/20)

To add fractions, we need a common denominator. The least common multiple (LCM) of 2, 5, and 20 is 20. So, we'll rewrite the fractions with the common denominator:

(-3/2) * (10/10) + (19/5) * (4/4) + (-163/20)

= (-30/20) + (76/20) + (-163/20)

Now, we can add the numerators:

= (-30 + 76 - 163)/20

= (-117)/20

Therefore, the result is -117/20.