Simplify both sides of the equation
34+p+112=78-7
34+p+112=78+ - 7
(P) + (34+112) = (78+ - 7 )
Combine like terms
P+146=71
Subtract 146 from both sides
P+146-146 = 71-146
P= -75
I do it for you step by step so you the teacher can see where you found that answer . It's not just put -75 , that's not help .
So let me know if you got it or not ?