Đáp án:
4) x=1
Giải thích các bước giải:
\(\begin{array}{l}
1)\dfrac{{3\left( {x - 1} \right) + 2\left( {x - 1} \right) - x + 1 - 2.6}}{6} = 0\\
\to 3x - 3 + 2x - 2 - x + 1 - 12 = 0\\
\to 4x - 16 = 0\\
\to 4x = 16\\
\to x = 4\\
2)\dfrac{{2\left( {2x - 5} \right) + 2.6 - 3\left( {x - 2} \right)}}{6} = 0\\
\to 4x - 10 + 12 - 3x + 6 = 0\\
\to x + 8 = 0\\
\to x = - 8\\
3)\dfrac{{3\left( {10x + 3} \right) - 36 - 4\left( {3 + 2x} \right)}}{{36}} = 0\\
\to 30x + 9 - 36 - 12 - 8x = 0\\
\to 22x = 39\\
\to x = \dfrac{{39}}{{22}}\\
4)\dfrac{{5\left( {7x - 1} \right) + 2x.30 - 6\left( {16 - x} \right)}}{{30}} = 0\\
\to 35x - 5 + 60x - 96 + 6x = 0\\
\to 101x = 101\\
\to x = 1
\end{array}\)
