15.7-3.75-4.25 简便算

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15.7-3.75-4.25 简便算

15.7-3.75-4.25 简便算
15.7-3.75-4.25 简便算

15.7-3.75-4.25 简便算
15.7-3.75-4.25
=15.7-(3.75+4.25)
=15.7-8
=7.7

=15.7-(3.75+4.25)
=15.7-8
=7.7

15.7-3.75-4.25=15-(3.75+4.25)=15-8=7

15.7-3.75-4.25=15.7-(3.75+4.25)=15.7-8=7.7

=15.7-(3.75+4.25)
=15.7-8
=7.7

15.7-(3.75+4.25)
=15.7-8
=7.7