Question

Срочно, раскройте скобки, я тупаяa) 2,2 + (5,3 - 7,8);​

Answer 1

Ответ:

Пошаговое объяснение:

a) 2,2 + (5,3 - 7,8)=2,2+5,3-7,8=7,5-7,8=-0,3

Answer 2

a) 2,2 + (5,3 - 7,8) = 2,2 + (-2,5)

To perform the subtraction inside the parentheses, we subtract 7,8 from 5,3, which gives us -2,5.

Now we can substitute the result back into the expression:

2,2 + (-2,5)

To add these two numbers, we simply add their decimal parts together:

2,2 + (-2,5) = -0,3

Therefore, the result of the expression is -0,3.