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

Спс

Ок!

(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