Let's simplify each expression step by step:

-0,97 + 0,36
-0,97 + 0,36 = -0,61

-0,21 - 0,86
-0,21 - 0,86 = -1,07

Therefore, the final expression is:
|-0,61| - |-1,07|

Now, we need to find the absolute values:

|-0,61| = 0,61
|-1,07| = 1,07

Now substitute these values back into the expression:

0,61 - 1,07 = -0,46

Therefore, the final answer is -0,46.