1/6 + 1/18 х 3/4 ( 2/3 + 5/8 - 11/12) х 5 1/3 = 1/4.
1) 2/3 + 5/8 = 16/24 + 15/24 = 31/24; 2) 31/24 - 11/12 = 31/24 - 22/24 =
9/24 = 3/8; 3) 1/18 х 3/4 = 1/24; 4) 1/24 х 3/8 = 1/64; 5) 1/64 х 5 1/3
= 1/64 х 16/3 = 1/12; 6) 1/6 + 1/12 = 2/12 + 1/12 = 3/12 = 1/4.