How do you solve -3x - 2y = -13 and -5x -y = -17

This question awards 100 ! i really don’t want to fail i will also mark you !

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?

Simplify the expression. -2/5(10+15m-20n)