题目内容
| 解方程: X-
| 2X-5.8=6.6 | X-(
|
|
(1)x-
=
,
x-
+
=
+
,
x=
;
(2)2X-5.8=6.6,
2X-5.8+5.8=6.6+5.8,
2x=12.4,
2x÷2=12.4÷2,
x=6.2;
(3)x-(
+
)=
,
x-
=
,
x-
+
=
+
,
x=
;
(4)
-3x=
,
-3x+3x=
+3x,
3x+
=
,
3x+
-
=
-
,
3x=
.
3x÷3=
÷3,
x=
.
| 4 |
| 5 |
| 3 |
| 8 |
x-
| 4 |
| 5 |
| 4 |
| 5 |
| 3 |
| 8 |
| 4 |
| 5 |
x=
| 47 |
| 40 |
(2)2X-5.8=6.6,
2X-5.8+5.8=6.6+5.8,
2x=12.4,
2x÷2=12.4÷2,
x=6.2;
(3)x-(
| 5 |
| 21 |
| 3 |
| 7 |
| 2 |
| 3 |
x-
| 2 |
| 3 |
| 2 |
| 3 |
x-
| 2 |
| 3 |
| 2 |
| 3 |
| 2 |
| 3 |
| 2 |
| 3 |
x=
| 4 |
| 3 |
(4)
| 4 |
| 5 |
| 1 |
| 4 |
| 4 |
| 5 |
| 1 |
| 4 |
3x+
| 1 |
| 4 |
| 4 |
| 5 |
3x+
| 1 |
| 4 |
| 1 |
| 4 |
| 4 |
| 5 |
| 1 |
| 4 |
3x=
| 11 |
| 20 |
3x÷3=
| 11 |
| 20 |
x=
| 11 |
| 60 |
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