решите уравнение (дроби) 8 6\13-(х + 9\13) = 4 2\13

8 6\13-(х + 9\13) = 4 2\13х + 9/13 = 8 6/13 - 4 2/13х + 9/13 = 4 4/13х = 4 4/13 - 9/13х = 3 17/13 - 9/13х = 3 8/13