问题
解答题
解方程. 4x-2x=3×18 (1-25%)x=24
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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
=16:x,1 12
x=1 4
×16,1 12
x=
×16×4,1 12
x=
,16 3
x=5
.1 3
解方程. 4x-2x=3×18 (1-25%)x=24
|
(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
=16:x,1 12
x=1 4
×16,1 12
x=
×16×4,1 12
x=
,16 3
x=5
.1 3