问题 解答题
求未知数Χ.
1
3
1
6
=Χ:
1
2

0.75Χ+
1
2
×
3
4
=1
答案

(1)

1
3
1
6
=x:
1
2

1
6
x=
1
3
×
1
2

1
6
x=
1
6

x=1;

(2)0.75x+

1
2
×
3
4
=1,

0.75x+

3
8
=1,

0.75x+

3
8
-
3
8
=1-
3
8

0.75x=

5
8

x=

5
8
÷0.75,

x=

5
6

判断题
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