How many solutions does this system have -6x-18y=264 -12x-36y=130

245 m So you divide the shape into section to make a rectangle and a triangle and find the area of a rectangle or square you multiply the length times height in this case is 18*10 and to find the area of a triangle you multiply its base times its height divided by two in which un this case would be (10*13)/2 and one you add both the equations together you get your area 180+65