Решите уравнение 7/13×(26/21+x)-28/54:14/27= -11/117

7/13 * (26/21 + x) - 28/54 : 14/27 = - 11/117;7/13 * 26/21 + 7/13 * х - 28/54 * 27/14 = - 11/117;182/273 + 7/13х - 2/2 * 1/1 = - 11/117;7/13х + 182/273 - 273/273 = - 11/117;7/13х - 91/273 = - 11/117;7/13х = - 11/117 + 91/273;7/13х = - 11/117 + 13/39;7/13х = - 11/117 + 39/117;7/13х = 28/117;х = 28/117 : 7/13;х = 28/117 * 13/7;х = 4/9;7/13 * (26/21 + 4/9) - 28/54 : 14/27 = - 11/117;7/13 * (78/63 + 28/63) - 1 = - 11/117;7/13 * 106/63 - 1 = - 11/117;742/819 - 819/819 = - 11/117;- 77/819 = - 11/117;- 11/117 = - 11/117.