题目内容

解方程或解比例
6
x
=
10
7
②3:8=24:x
3
4
9
10
=x:
3
5
12.5
2.5
=
x
8
⑤x-
3
5
x=
6
5
⑥0.25+25%x=1.5;
1
2
X-
4
5
=
1
5
⑧4.5x-
1
2
x=6.
6
x
=
10
7

     10x=6×7,
 10x÷10=42÷10,
       x=4.2;

②3:8=24:x,
    3x=8×24,
 3x÷3=192÷3,
     x=64;

3
4
9
10
=x:
3
5

    
9
10
x=
3
4
×
3
5

9
10
x÷
9
10
=
9
20
÷
9
10

       x=0.5;

12.5
2.5
=
x
8

     2.5x=12.5×8,
2.5x÷2.5=100÷2.5,
        x=40;

⑤x-
3
5
x=
6
5

 
2
5
x÷
2
5
=
6
5
÷
2
5

      x=3;

⑥0.25+25%x=1.5,
0.25+25%x-0.25=1.5-0.25,
     25%x÷25%=1.25÷25%,
             x=5;

1
2
x-
4
5
=
1
5

1
2
x-
4
5
+
4
5
=
1
5
+
4
5

   
1
2
x÷
1
2
=1÷
1
2

        x=2;

⑧4.5x-
1
2
x=6,
     4x÷4=6÷4,
         x=1.5.
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