题目内容
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| 38 |
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| 38 |
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分析:先把右边计算出来得:
+
x=10,再利用等式的性质,方程两边同时减去
,再同时乘
即可求解.
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解答:解:
+
x=12×
,
+
x=10,
+
x-
=10-
,
x=
,
x×
=
×
,
x=
;
故答案为:
.
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| 19 |
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| 19 |
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x=
| 38 |
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故答案为:
| 38 |
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点评:此题考查了利用等式的性质解方程的方法.解答时注意上下等号对齐.
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