Tìm x biết rằng là: (left( {256 - 75} ight) + left( { - 234 + 342} ight)x = - 35)

* Hướng dẫn giải

Ta có:

\(\begin{array}{l} \ \,\left( {256 - 75} \right) + \left( { - 234 + 342} \right)x = - 35\\\,\,\,\,\,\,181 + 108x = - 35\\\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,108x = - 35 - 181\\\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,108x = - 216\\\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,x = \left( { - 216} \right):108\\\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,x = - 2\end{array}\)