728-238-162简便计算
=500-162
=338
157－(57+48)的简便计算
=157-57-48
=100-48
=52
真希望能帮到你！
728-238-162
=728-(238+162)
=728-400
=328
157-(57+48)
=157-57-48
=100-48
=52
728-238-162
=728-（238+162）
=728-400
=328
157－(57+48)
=157-57-48
=100-48
=52
728-238-162
=728-（238+162)
=728-400
=328
157-（57+48)
=157-57-48
=100-48
=52
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