4x y 3 2x 3y 5 July 8, 2019 16 32 64 128 4x y 3 2x 3y 5 graph 2x 3y 5 4x y 3 metode substitusi 2x 3y 5 4x y 3 metode eliminasi Y 3y '+ 5y 4x 3 2x