12x 8x =- 4x 4 July 8, 2019 16 32 64 128 12x 4 8x 4x 2 3 12x 3 )+( 8x 4 )+( 4x 25 )= 180 8x 4 4x 12x 12 8x 4 4x 12x 1 3 12x 4x 8 2 8x 4 8x 5 4x 12x 4 12 x 4 8
