问题
解答题
求未知数X:
|
答案
(1)X-1.8=5.4,
X-1.8+1.8=5.4+1.8,
X=7.2;
(2)X-0.5=6,
X-0.5+0.5=6+0.5,
X=6.5;
(3)X+
X=5 4
,27 16
X=9 4
,27 16
X÷9 4
=9 4
÷27 16
,9 4
X=
.3 4
求未知数X:
|
(1)X-1.8=5.4,
X-1.8+1.8=5.4+1.8,
X=7.2;
(2)X-0.5=6,
X-0.5+0.5=6+0.5,
X=6.5;
(3)X+
X=5 4
,27 16
X=9 4
,27 16
X÷9 4
=9 4
÷27 16
,9 4
X=
.3 4