88*27+27*12+13=(88+12)x27+13=100x27+13=2700+13=2713
用抽公因方法,提取相同的乘数: 88*27+27*12+13=(88+12)x27+13=2700+13=2713
88*27+27*12+13=27*(88+12)+13=27*100+13=2700+13=2713