Can someone me with this? preferably asap

So  x is one number and x + 1 is another

1. x + x + 1 = 57;
2. 2x + 1 = 57;
           -1     -1
4. 2x = 56
5. x = 56/2
6. x = 28

So, x + 1 = 28 + 1 = 29
So 28 and 29 are the 2 consecutive integers of 57

No a triangle cannot be formed because when you add the two smallest number together (which would be 11) the have to be bigger than the number it is "against" ( which would be 12)