3-3/2÷21/10-2/7简算
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3-3/2÷21/10-2/7简算3-3/2÷21/10-2/7简算3-3/2÷21/10-2/7简算3-3/2÷21/10-2/7=3-5/7-2/7=3-(5/7+2/7)=3-1=2
3-3/2÷21/10-2/7简算
3-3/2÷21/10-2/7简算
3-3/2÷21/10-2/7简算
3-3/2÷21/10-2/7
=3-5/7-2/7
=3-(5/7+2/7)
=3-1
=2