10 1/4-61/5. 21 15/16-19 3/125
61/5 или 6 1/5 ? Ответь.
6 1/5
10 1/4 - 6 1/5 = 41/4 -31/5 = 205/20 - 124/20 = 81/20 = 4 1/20 21 15/16 - 19 3/125 = (21-19) + (15/16-3/125) = 2 + (1875/2000 - 48/2000= = 2 1827/2000