X y 7 2x 3y 9 July 8, 2019 16 32 64 128 X y 7 2x 3y 9 by graphical method X y 7 2x 3y 9 substitution method X y 7 2x 3y 9 by cramer's method Solve x y 7 2x 3y 9 The solution of x y 7 and 2x 3y 9 is The solution of equation x y 7 and 2x 3y 9