题目内容
解方程x-
=
x+3.5×2=12 0.6x-0.5=3.1.
5 |
6 |
1 |
6 |
(1)x-
=
,
x-
+
=
+
,
x=1;
(2)x+3.5×2=12,
x+7=12,
x+7-7=12-7,
x=5;
(3)0.6x-0.5=3.1,
0.6x-0.5+0.5=3.1+0.5,
0.6x=3.6,
0.6x÷0.6=3.6÷0.6,
x=6.
5 |
6 |
1 |
6 |
x-
5 |
6 |
5 |
6 |
1 |
6 |
5 |
6 |
x=1;
(2)x+3.5×2=12,
x+7=12,
x+7-7=12-7,
x=5;
(3)0.6x-0.5=3.1,
0.6x-0.5+0.5=3.1+0.5,
0.6x=3.6,
0.6x÷0.6=3.6÷0.6,
x=6.
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