Mathematics Homework Help

I have this assignment and it is one time try please help me to get A grade and please do not give it to any student

all answers with details, no short cut also with the explanation for steps the professor will ask me about it, so please I need to know what I said

for example:

we will add 2 to both sides <—- this is very simple example

2+x=y+2

finally, I need you A grade work