题目内容
解方程
-2x=
x×(
+
)=
x-5x%=17.5
×
-
x×2=
.
| 3 |
| 4 |
| 5 |
| 8 |
x×(
| 5 |
| 6 |
| 5 |
| 8 |
| 7 |
| 20 |
| 3 |
| 4 |
| 3 |
| 4 |
| 4 |
| 9 |
| 1 |
| 6 |
| 1 |
| 5 |
(1)
-2x=
,
-2x+2x=
+2x,
+2x-
=
-
,
2x÷2=
÷2,
x=
;
(2)x×(
+
)=
x=
,
x×
=
×
,
x=
;
(3)
x-5x%=17.5,
x=17.5,
x×
=17.5×
,
x=25;
(4)
×
-
x×2=
,
-
x=
,
-
x+
x=
+
x,
+
x-
=
-
,
x×3=
×3,
x=
.
| 3 |
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| 5 |
| 8 |
| 3 |
| 4 |
| 5 |
| 8 |
| 5 |
| 8 |
| 5 |
| 8 |
| 3 |
| 4 |
| 5 |
| 8 |
2x÷2=
| 1 |
| 8 |
x=
| 1 |
| 16 |
(2)x×(
| 5 |
| 6 |
| 5 |
| 8 |
| 7 |
| 20 |
| 35 |
| 24 |
| 7 |
| 20 |
| 35 |
| 24 |
| 24 |
| 35 |
| 7 |
| 20 |
| 24 |
| 35 |
x=
| 6 |
| 25 |
(3)
| 3 |
| 4 |
| 14 |
| 20 |
| 14 |
| 20 |
| 20 |
| 14 |
| 20 |
| 14 |
x=25;
(4)
| 3 |
| 4 |
| 4 |
| 9 |
| 1 |
| 6 |
| 1 |
| 5 |
| 1 |
| 3 |
| 1 |
| 3 |
| 1 |
| 5 |
| 1 |
| 3 |
| 1 |
| 3 |
| 1 |
| 3 |
| 1 |
| 5 |
| 1 |
| 3 |
| 1 |
| 5 |
| 1 |
| 3 |
| 1 |
| 5 |
| 1 |
| 3 |
| 1 |
| 5 |
| 1 |
| 3 |
| 2 |
| 15 |
x=
| 2 |
| 5 |
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