Verified answer

[tex]-15.42-(-34.71)-24.54-(-4.22)+(-81.75)=\\=\underbrace{-15.42+34.71}_{19.29}-24.54+\underbrace{4.22-81.75}_{-77.53}=\\=\underbrace{19.29-24.54}_{-5.25}-77.53=-5.25-77.53=-82.78[/tex]

Ответ:

-82,78

Пошаговое объяснение:

-15,42-(-34,71)-24,54-(-4,22)+(-81,75)=-15,42+34,71-24,54+4,22-81,75=

= 34,71+4,22-15,42-24,54-81,75=-82,78