5 7 x 3 9 July 8, 2019 16 32 64 128 13 2 5 7 x 3 9 1 5 7 x 3 1 9 5 7 9 x 3 8 8 5 2 7 x 3 9 5 1 7 х 3 8 9 5 3 x 7 9 in cm 5 x 3 )- 3x 7 9 9 7 x 3 )= 5 6x 9 7 x 3 )= 5 4x 5 6 7 9 x 3 8 7 1 x )+ 3 9 4 5 1 6 3 5 x 7 9 9 7 x 3 ≥ 5 6x 5 3 x 7 3 x 9 2 5 x 7 )+ 9 3 x 2 )+ 4
