题目解下列不等式（组).(1)1−2−3x5＞1+x2(1)1-\frac{2-3x}{5}＞\frac{1+x}{2}(1)1−52−3x＞21+x；(2){3x−1≥x+1x+4＜4x−2(2)\left\{\begin{array}{l}3x-1≥x+1\\ x+4＜4x-2\end{array}\right.(2){3x−1≥x+1x+4＜4x−2.知识点：解二元一次方程组——代入消元法、解二元一次方程组章节：未标注
