3.6x÷1.2=9.75.

问题描述:

3.6x÷1.2=9.75.

3.6x÷1.2=9.75,
3.6x÷1.2×1.2=9.75×1.2,
          3.6x=11.7,
     3.6x÷3.6=11.7÷3.6,
             x=3.25.