Решите уравнение 3) х+6/13=1 4)1-х=26/31
( X + 6) / 13 или Х + ( 6/13 ) ?
6/13
Х = 1 - 6/13 Х = 13/13 - 6/13 Х = 7/13 ---------------------- 1 - Х = 26/31 1 - 26/31 = Х Х = 5/31