Respuesta :

gymduck
(I'm going to show you the first problem)

25 - (3.1 x 6 +5.3)

Calculate everything in the parentheses first: 

- 3.1 x 6 = 18.6

- 18.6 + 5.3 = 23.9

So now you only have two numbers

- 25 - 23.9 = 1.1

The answer is 1.1

Let me know if you need help with anything else!