题目对非负实数xxx“四舍五入”到个位的值记为[x][x][x]，即当nnn为非负整数时，若n−12⩽x<n+12n-\dfrac{1}{2}\leqslant x< n+\dfrac{1}{2}n−21⩽x<n+21，则[x]=n.[x]=n.[x]=n.如：[2.9]=3[2.9]=3[2.9]=3，[2.4]=2[2.4]=2[2.4]=2，[x]=n[x]=n[x]=n，求满足[x]=43x−2[x]=\dfrac{4}{3}x-2[x]=34x−2的所有实数xxx的值.知识点：函数章节：未标注
