• 1. (2017五上·泸水期末) 解方程．

  ①4x﹣0.5x=0.7          

  ②3.5×6﹣3x=11.4       

  ③5（x﹣3）=2

  ④x+2.5=4.8         

  ⑤4.5x+3.5x=64.8

  ⑥7x÷3=8.19．