1 2 3 minus 6 7 July 8, 2019 16 32 64 128 1 2 3 − 6 7 4 2 3 minus 1 6 7 6 1 2 minus 3 7 10 Rewrite using twenty firsts 1 2 3 − 6 7 Минус 3 1/2 + 1/3 + 1/6 1-2+3-4+5-6 до 73 3 1/6 minus 1 5/6