2 3y 4 )= 5y 16 July 8, 2019 16 32 64 128 5y 1 4 3y 2 16 3 5y 3 8y 2 3y 4 16y 2 4 5y =- 12 dan 2 3y 16 2 5(4-3y)-y+2 3
