I struggled with these as u can see, but pls answer all 3 questions and show how you set all the problems up (ill be giving brainliest)

I struggled with these as u can see but pls answer all 3 questions and show how you set all the problems up ill be giving brainliest class=

Respuesta :

Answer:

1+1-2 its 2

Step-by-step explanation:

4 because you need to know it’s 345