Найдите значение выражения: (3/16+а)-3/8, а=5/12 (б+5/6)-3/4, б=11/12 (4/15+5/8)-с, с=3/5 (1/5+д)-9/20, д=13/16
(3/16 + 5/12) - 3/8 = 9/48 + 20/48 - 18/48 = 11/48 ----------------------------------- (11/12 + 5/6) - 3/4 = 11/12 + 10/12 - 9/12 = 12/12 = 1 ---------------------------------- (4/15 + 5/8)- 3/5 = 32/120 + 75/120 - 72/120 = 35/120 = 7/24 ------------------------------------- (1/5 + 13/16) - 9/20 = 16/80 + 65/80 - 36/80 = 45/80 = 9/16
Спс
Ок!