如果AA=BBB,BB=CCC,AA-B=( )个C ,AA+B=( )个C

问题描述:

如果AA=BBB,BB=CCC,AA-B=( )个C ,AA+B=( )个C

AA=BBB,BB=CCC,AA-B=(3 )个C ,AA+B=( 6)个C.
不懂再问我我会说的详细点,