7x y 5 21x 3y 10 July 8, 2019 16 32 64 128 Graphically 7x y 5 and 21x 3y 10 represent two lines which are The pair of equations 7x y 5 21x 3y 10 7x = 21 2x - 3y = 3 7x - 3y = 21
