题目内容
化简|| 1 |
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分析:根据绝对值的定义,首先将|
-
|+|
-
|+|
-
|-|
-
|去掉绝对值,再通过加法的结合律,进而算得结果为0.
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解答:解:|
-
|+|
-
|+|
-
|-|
-
|,
=(
-
)+(
-
)+(
-
)-(
-
),
=
-
+
-
+
-
-
+
,
=(
-
)+(
-
)+(
-
)+(
-
),
=0.
故答案为:0.
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=(
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=
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=(
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=0.
故答案为:0.
点评:本题考查了绝对值的定义.同学们需注意在一个式子中无论数据有多少,数值有多大,都要根据绝对值的定义,逐个去掉绝对值来解决.
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