问题 解答题
解方程.
4x-2x=3×18
(1-25%)x=24
1
4
1
12
=16:x.
答案

(1)4x-2x=3×18,

2x=3×18,

x=3×18÷2,

x=3×9,

x=27;

(2)(1-25%)x=24,

x=24÷75%,

x=32;

(3)

1
4
1
12
=16:x,

1
4
x=
1
12
×16,

x=

1
12
×16×4,

x=

16
3

x=5

1
3

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