问题 解答题
解方程或解比例:
(1)
3
4
x-
3
4
=
1
2
(2)1.5:
2
3
=x:8
答案

(1)

3
4
x-
3
4
=
1
2

3
4
x-
3
4
+
3
4
=
1
2
+
3
4

3
4
4
3
=
5
4
×
4
3

x=

5
3

(2)1.5:

2
3
=x:8,

2
3
x=1.5×8,

2
3
3
2
=12×
3
2

x=18.

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