问题 解答题
解方程(比例)
4x+3×0.7=6.5                                          x:8=
3
4
:1
1
5
答案

(1)4x+3×0.7=6.5,

            4x+2.1=6.5,

        4x+2.1-2.1=6.5-2.1,

                4x=4.4,

             4x÷4=4.4÷4,

                 x=1.1;

(2)x:8=

3
4
:1
1
5

     1

1
5
x=8×
3
4

     1

1
5
x=6,

 1

1
5
5
6
=6×
5
6

        x=5.

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