3x +1=3x+1

does it have one solution, no solution or infinitely many

Can someone me with my hwplz(only the circled ones)

What are “like terms”? why can we only add like terms?

The rumpart family is building a new room onto their house. the width of the new room will be 16 feet. the length of the room will be 4% greater than the width. write an expression to find the length of the new room. what will be the area of this new room?