3y 7 5 y − 3 July 8, 2019 16 32 64 128 2x 3y 7 3x 5 y 4x 3y 5 3x y 7 3y 7 y 5 y 35 7 3y 5 )+ 3 y 4 3y 7 5y 3 3 3y 8 )= 5 7 y )- 3 2y 3y 7 )- 2 y 4 )+ 5 y =- 3 Expand and simplify 7 3y 5 )+ 3 y 4 2x 3y 7 3x y 5 by substitution method 2x 3y 7 3x y 5 by elimination method 2 3y 7 3 y 5
