4 7 12 x 2 2 5 July 8, 2019 16 32 64 128 12 2 x 7 2 4 1 ) = 58 7 3x 12 3 4 2 x 2 )+ 5 5 2x )/ 6 4 + 4 = 12 12 7-4 5x=8 29 4 x 2 7/12 4 7×12 3
