X 2y 5 2x 3y 10 July 8, 2019 16 32 64 128 X 2y 5 2x 3y 10 by elimination method X 2y 5 2x 3y 10 substitution method X 2y 5 2x 3y 10 graphically X 2y 5 2x 3y 10 by cramer's rule X 2y 5 x 3z 10 2x 3y 2z =- 10 If 3x 2y 5 and 2x 3y 10 then x y X+y 2 5+z xy