Question

解方程．0.75x+3×0.8=7.5 &nbs...

解方程．0.75x+3×0.8=7.5 2x0.6=0.93．

Answer 1

（1）0.75x+3×0.8=7.5，
            0.75x+2.4=7.5，
                0.75x=7.5-2.4，
                0.75x=5.1，
                    x=5.1÷0.75，
                    x=6.8；
（2）

2x

0.6

＝

0.9

3

，
     2x×3=0.6×0.9，
        6x=0.54，
         x=0.54÷6，
         x=0.09．