Вычислите а) (3/4)/3+(5/6-1/2)/9= б) (3/4-5/12)*3-1/16/1/8=

а) (3/4)/3 + (5/6 - 1/2)/9 = 3/(4 * 3) + (5/6 - 3/6)/9 = 1/4 + ((5 - 3)/6)/9 = 1/4 + (2/6)/9 = 1/4 + 1/27 = 27/108 + 4/108 = (27 + 4)/108 = 31/108;

б) (3/4 - 5/12) * 3 - 1/16/1/8 = (3 * 3/12 - 5/12) * 3 - 1/16 * 8 = (9 - 5)/12 * 3 - 8/16 = 12/12 - 1/2 = 2/2 - 1/2 = 1/2.