(81/8-57/8)+25/8 как решить
(81/8-57/8)+25/8=(81-57)/8+25/8=24/8-25/8=-1/8
( 81/8 - 57/8) + 25/8 = 19/8 = 6 1/8 1) 81/8 - 57/8 = 24/8 2) 24/8 + 25/8 = 49/8 = 6 1/8