问题
解答题
求未知数x. (1)
(2)5X÷40%=15. |
答案
(1)
X-5 6
X=24,2 3
X=24,1 6
X÷1 6
=24÷1 6
,1 6
X=144;
(2)5X÷40%=15,
5X÷40%×40%=15×40%,
5X=6;
5X÷5=6÷5;
X=1.2.
求未知数x. (1)
(2)5X÷40%=15. |
(1)
X-5 6
X=24,2 3
X=24,1 6
X÷1 6
=24÷1 6
,1 6
X=144;
(2)5X÷40%=15,
5X÷40%×40%=15×40%,
5X=6;
5X÷5=6÷5;
X=1.2.