5 2 x 1 3 13 July 8, 2019 16 32 64 128 5 2 8 x 3 1 13 x 1 3 10 5 x 3 )- 2 x 1 )= 3x 13 5 x 1 )- 2 x 3 ≥ 13 1 2 3 5 x 13 21 1 3 x 3.14 x 5 2 x 13 1 3 x pi x 5 2 x 13 4 5 1 2 x 3 13 8 13 3 x-5=x+3
