\[\boxed{\text{133\ (133).}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[\textbf{а)}\ 5x + (3x - 3) = 6x + 11\]
\[5x + 3x - 3 = 6x + 11\]
\[8x - 6x = 11 + 3\]
\[2x = 14\]
\[x = 14\ :2\]
\[x = 7\]
\[Ответ:x = 7.\]
\[\textbf{б)}\ 3a - (10 + 5a) = 54\]
\[3a - 10 - 5a = 54\]
\[- 2a = 54 + 10\]
\[- 2a = 64\]
\[a = 64\ :( - 2)\]
\[a = - 32\]
\[Ответ:a = - 32.\]
\[\textbf{в)}\ (x - 7) - (2x + 9) = - 13\]
\[x - 7 - 2x - 9 = - 13\]
\[- x = - 13 + 16\]
\[- x = 3\]
\[x = - 3\]
\[Ответ:x = - 3.\]
\[\textbf{г)}\ 0,6 + (0,5y - 1) = y + 0,5\]
\[0,6 + 0,5y - 1 - y = 0,5\]
\[- 0,5y = 0,5 + 0,4\]
\[- 0,5y = 0,9\]
\[y = 0,9\ :( - 0,5)\]
\[y = - 9\ :5\]
\[y = - 1,8\]
\[Ответ:y = - 1,8.\]