5 12 4 x 2 x 4 2 July 8, 2019 16 32 64 128 10x 8x 5 2 )+( 12 x 6x 4 )-( x 4 x 2 4(2 5-x)-4 5=12 5 5/12 x 4 - 5 * 12 4*(-2)
