问题 解答题
解比例
6x=107
9.6
x
=
9
0.6
15:3=12:x
22.4x=23
0.5
0.4
=
x
0.6
12.5:2.5=8x.
答案

(1)6x=107,

        6x=107÷6,

         x=17

5
6

(2)

9.6
x
=
9
0.6

       9x=9.6×0.6,

    9x÷9=5.76÷9,

        x=0.64;

(3)15:3=12:x,

       15x=3×12,

   15x÷15=36÷15,

         x=2.4;

(4)22.4x=23,

22.4x÷22.4=23÷22.4,

          x=1

3
112

(5)

0.5
0.4
=
x
0.6

     0.4x=0.5×0.6,

0.4x÷0.4=0.3÷0.4,

        x=0.75;

(6)12.5:2.5=8x,

           20x=12.5,

       20x÷20=12.5÷20,

             x=0.625.

单项选择题
单项选择题