题目: 解方程.2-12x=8523x÷45=516. 答案: (1)2-12x=85 2-12x+12x=85+12x 2-85=85+12x-8525÷12=12x÷12 x=45;(2)23x÷45=516 56x=516 56x÷56=516÷56 x=38.