5 1 2 x 7 3 4 July 8, 2019 16 32 64 128 5 1 2 x 7 3 4 envelopes 5 1 2 x 7 3 4 outer envelopes 6 7 1 2 x 3 4 5 8 5 2x 1 )- 3 3x 2 )= 7 x 4 2 3 x 5 4 1 2 x 7 6 1 3 4 1 2 x )- 5 x 3 10 )= 7 4 4 5 * x 7 3 1 2 9 3 1 2x 5 2 7 2x 3 4 2 5 x 1 7 x 3 4 as a fraction
