-5/12与2又7/12的差比-1/2与1/6得和少多少?

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-5/12与2又7/12的差比-1/2与1/6得和少多少?-5/12与2又7/12的差比-1/2与1/6得和少多少?-5/12与2又7/12的差比-1/2与1/6得和少多少?-1/2+1/6-[(-5

-5/12与2又7/12的差比-1/2与1/6得和少多少?
-5/12与2又7/12的差比-1/2与1/6得和少多少?

-5/12与2又7/12的差比-1/2与1/6得和少多少?
-1/2+1/6-[(-5/12)-2 7/12]=2 2/3