如题所述
第1个回答 2015-03-19
98x38
=(100-2)x38
=100x38-2x38
=3800-76
=3724本回答被网友采纳
=(100-2)x38
=100x38-2x38
=3800-76
=3724本回答被网友采纳
第2个回答 2015-03-19
原式
=(100-2)x38
=100x38-2x38
=3800-76
=3724
=(100-2)x38
=100x38-2x38
=3800-76
=3724