8 х 7 ) 16 =- 40 July 8, 2019 16 32 64 128 8 х 7 )+ 16 =- 40 8 x 7 )+ 16 =- 40 16 ×2=8 4/7 х = 16 4 8/х=1 6/7 4 8 - х = 16 3