问题
解答题
解方程
4x+125%x=42. |
答案
(1)
X+3 4
=1 8
,1 2
X+3 4
-1 8
=1 8
-1 2
,1 8
X=3 4
,3 8
X×3 4
=4 3
×3 8
,4 3
X=
;1 2
(2)4x+125%x=42
(4+125%)x=42,
5.25x=42,
5.25x÷5.25=42÷5.25,
x=8.
解方程
4x+125%x=42. |
(1)
X+3 4
=1 8
,1 2
X+3 4
-1 8
=1 8
-1 2
,1 8
X=3 4
,3 8
X×3 4
=4 3
×3 8
,4 3
X=
;1 2
(2)4x+125%x=42
(4+125%)x=42,
5.25x=42,
5.25x÷5.25=42÷5.25,
x=8.