1 2 x 7 15 July 8, 2019 16 32 64 128 7 1 2 х 7 1 15 1 5 x 2 3 )= 7 15 4 2 x 1 )+ 7 15 7 15 1 1 x 2 14 2x 1 5 x 2 3 x 7 15 1 2 x 7 18 15 15 1 2 x 7 3 4 - 1/2 (4x+20)-7(x 15/7 ) 1 2 x 3 7 x 14 15 15 1 2 x 7 1 2 vent cover 2 x 1 7 x 15 3 15 x 16 1 2 x 7 X 2 15x 7 =- 6x 1 9 x 2 )- 7 x 1 )=- 15 1 2 x 23 9 1 4 x 15 7
