12.6*1.25+3.4/0.8+1.4*12.5
问题描述:
12.6*1.25+3.4/0.8+1.4*12.5
答
原式=63/5*5/4+17/4+7/5*25/2=63/4+17/4+7/2=20+3.5=23.5
12.6*1.25+3.4/0.8+1.4*12.5
原式=63/5*5/4+17/4+7/5*25/2=63/4+17/4+7/2=20+3.5=23.5