化简代数式|a+b|-|a-1| b a_____|__|_______|_______|____|__|_______|______________________ -1 0 1 2A.b+1 B.2a+b-1
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![化简代数式|a+b|-|a-1| b a_____|__|_______|_______|____|__|_______|______________________ -1 0 1 2A.b+1 B.2a+b-1](/uploads/image/z/4326972-60-2.jpg?t=%E5%8C%96%E7%AE%80%E4%BB%A3%E6%95%B0%E5%BC%8F%7Ca%2Bb%7C-%7Ca-1%7C+++++++++b+++++++++++++++++++++++++++++++++++++++++a_____%7C__%7C_______%7C_______%7C____%7C__%7C_______%7C______________________++++++++++++++++++++++++++++-1++++++++++++0+++++++1++++++++++++++++++2A.b%2B1+++++++++++++++++B.2a%2Bb-1)
化简代数式|a+b|-|a-1| b a_____|__|_______|_______|____|__|_______|______________________ -1 0 1 2A.b+1 B.2a+b-1
化简代数式|a+b|-|a-1|
b a
_____|__|_______|_______|____|__|_______|______________________
-1 0 1 2
A.b+1 B.2a+b-1 C.-2a-b+1 D.-b-1
打错了,那个"1"在"a"的后面一格。
化简代数式|a+b|-|a-1| b a_____|__|_______|_______|____|__|_______|______________________ -1 0 1 2A.b+1 B.2a+b-1
注意绝对值的含义:正数的绝对值是它本身,负数的绝对值是它的相反数,0的绝对值是0.
从数轴上看,a+b