脱式计算﹙写过程﹚ ①1-1/2-2/11
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脱式计算﹙写过程﹚①1-1/2-2/11脱式计算﹙写过程﹚①1-1/2-2/11脱式计算﹙写过程﹚①1-1/2-2/111-1/2-2/11=﹙1-1/2﹚-2/11=1/2-2/11=11/22-4
脱式计算﹙写过程﹚ ①1-1/2-2/11
脱式计算﹙写过程﹚ ①1-1/2-2/11
脱式计算﹙写过程﹚ ①1-1/2-2/11
1-1/2-2/11
=﹙1-1/2﹚-2/11
=1/2-2/11
=11/22-4/22
=7/22