题目内容
解方程.
x+
×
=1 x×(
-
)=
.
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分析:(1)要先化简,再根据等式的性质,方程两边同时减去
,然后再在方程的两边同时除以
来解.
(2)要先化简,再根据等式的性质,方程两边同时乘12来解.
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| 8 |
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(2)要先化简,再根据等式的性质,方程两边同时乘12来解.
解答:解:
x+
×
=1,
x+
=1,
x+
-
=1-
,
x÷
=
÷
,
x=
;
x×(
-
)=
,
x=
,
x×12=
×12,
x=8.
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| 8 |
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| 8 |
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x=
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x×(
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| 12 |
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x=8.
点评:根据等式的性质来解方程,注意等号对齐.
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