Question

-0,6 + (-1/2) + 0,7 -3,8 + ( -5,4) -0.75 + ( -4/5) + 0,9

Answer 1

$- 0.6 + ( - \frac{1}{2} ) + 0.7 = - 0.6 - \frac{1}{2} + 0.7 = - 0.6 - 0.5 + 0.7 = - 0.4или - \frac{2}{5}$

$- 3.8 + ( - 5.4) = - 3.8 - 5.4 = - 9.2$

$- 0.75 + ( - \frac{4}{5} ) + 0.9 = - 0.75 - \frac{4}{5} + 0.9 = - 0.75 - 0.8 + 0.9 = - 0.65или - \frac{13}{20}$

Answer 2

Let's add the numbers step by step:

-0.6 + (-1/2) + 0.7 - 3.8 + (-5.4) - 0.75 + (-4/5) + 0.9

First, add the decimals together:

(-0.6) + 0.7 - 3.8 - 0.75 + 0.9 = -4.55

Now, add the fractions together. To do this, you'll need to find a common denominator, which is 10:

-1/2 + (-4/5) = -5/10 + (-8/10) = -13/10

Now, add this fraction to the result from the decimals:

-4.55 + (-13/10)

To add a decimal and a fraction, convert the decimal to a fraction with a denominator of 10:

-4.55 = -455/100

Now, add the fractions:

-455/100 + (-13/10)

To add these fractions, you need a common denominator, which is 100:

-455/100 + (-13/10) = -455/100 + (-130/100)

Now, add the fractions:

-455/100 + (-130/100) = (-455 - 130) / 100 = -585/100

Simplify the fraction:

-585/100 = -117/20

So, the final result is -117/20 or -5.85 as a decimal.