解:(1)2x-
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=0.5,
2x-
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,
2x÷2=1÷2,
x=0.5
(2)x+
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x=
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,
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x=
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,
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x×
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,
x=
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;
(3 )2:(1-x)=
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,
4×(1-x)=2×5,
4×(1-x)÷4=10÷4,
1-x+x=
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,
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,
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,
x=
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;
(4)0.36:x=
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,
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x=0.36×
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,
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x×10=0.16×10,
x=1.6.
分析:(1)运用等式的性质,在方程两边同时加上
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,然后再除以2.
(2)先化简,再运用等式的性质,在方程两边同时乘上
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.
(3)先根据比例的基本性质,把原式转化为4×(1-x)=2×5,再根据等式的性质,在方程两边同时除以4,再加x,最后减去
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.
(4)先根据比例的基本性质,把原式转化为
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x=0.36×
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,再根据等式的性质,在方程两边同时乘10来解.
点评:考查学生利用比例的基本性质和等式的性质来解方程的能力,注意等号对齐.