123乘以79加369乘以7怎么简便

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123乘以79加369乘以7怎么简便123乘以79加369乘以7怎么简便123乘以79加369乘以7怎么简便123*79+369*7=123*79+123*3*7=123*（79+21）=123*10

123乘以79加369乘以7怎么简便
123乘以79加369乘以7怎么简便

123乘以79加369乘以7怎么简便
123*79+369*7
=123*79+123*3*7
=123*（79+21）
=123*100
=12300

123*79+369*7 =123*79+123*3*7=123*79+123*21=123*（79+21）=12300

123*79+369*7=123*(79+3*7)=123*100=12300

123乘以79加369乘以7
369=123x3
则提取123
123*（79+3*7）
=123*100
=12300

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