Question

8 6/13 - (д + 9/13) =4 2/13 плииииииииз

Answer 1

8 6/13 - (д + 9/13) = 4 2/13;
д + 9/13 = 8 6/13 - 4 2/13;
д + 9/13 = 4 4/13;
д = 4 4/13 - 9/13;
д = 3 17/13 - 9/13;
д = 3 8/13.
Ответ: 3 8/13