x+25+(325-x)×(1-5% )=325+16
问题描述:
x+25+(325-x)×(1-5% )=325+16
怎么算?求了
答
x+25+0.95(325-x)=341
x+25+0.95×325-0.95x=341
x-0.95x=341-25-308.75
0.05x=7.25
x=7.25÷0.05
x=145