3 4y 8 )= 12 July 8, 2019 16 32 64 128 12y 8 3 4y 8 4y 8 2y 834y 3 12y 4y 2 =- 1 3 8 12y 3 4y-8 1y+2 2y=-10 4 8y+3 7y=11 9 3 8/y=41 8/11
