问题
解答题
解方程: (1)5x=75 (2)2x-
|
答案
(1)5x=75,
5x÷5=75÷5,
x=15;
(2)2x-
=1 3
,1 2
2x-
+1 3
=1 3
+1 2
,1 3
2x=
,5 6
2x÷2=
÷2,5 6
x=
.5 12
解方程: (1)5x=75 (2)2x-
|
(1)5x=75,
5x÷5=75÷5,
x=15;
(2)2x-
=1 3
,1 2
2x-
+1 3
=1 3
+1 2
,1 3
2x=
,5 6
2x÷2=
÷2,5 6
x=
.5 12