帮我解一个方程:1200*80%*0.35+1200*20%*0.35x=1200*0.25+1200*0.25*86%1200*80%*0.35+1200*20%*0.35*x=1200*0.25+1200*0.25*86%
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/03 02:02:57
![帮我解一个方程:1200*80%*0.35+1200*20%*0.35x=1200*0.25+1200*0.25*86%1200*80%*0.35+1200*20%*0.35*x=1200*0.25+1200*0.25*86%](/uploads/image/z/3009680-8-0.jpg?t=%E5%B8%AE%E6%88%91%E8%A7%A3%E4%B8%80%E4%B8%AA%E6%96%B9%E7%A8%8B%EF%BC%9A1200%2A80%25%2A0.35%2B1200%2A20%25%2A0.35x%3D1200%2A0.25%2B1200%2A0.25%2A86%251200%2A80%25%2A0.35%2B1200%2A20%25%2A0.35%2Ax%3D1200%2A0.25%2B1200%2A0.25%2A86%25)
帮我解一个方程:1200*80%*0.35+1200*20%*0.35x=1200*0.25+1200*0.25*86%1200*80%*0.35+1200*20%*0.35*x=1200*0.25+1200*0.25*86%
帮我解一个方程:1200*80%*0.35+1200*20%*0.35x=1200*0.25+1200*0.25*86%
1200*80%*0.35+1200*20%*0.35*x=1200*0.25+1200*0.25*86%
帮我解一个方程:1200*80%*0.35+1200*20%*0.35x=1200*0.25+1200*0.25*86%1200*80%*0.35+1200*20%*0.35*x=1200*0.25+1200*0.25*86%
两边同时消去1200,变成80%*0.35+20%*0.35*x=0.25+0.25*86% 即 0.8*0.35+0.2*0.35*x=0.25*(1+0.86) 即0.2*0.35*x=0.25*(1+0.86)-0.8*0.35 所以x=[0.25*(1+0.86)-0.8*0.35]/0.2/0.35=2.642857143
X=2.6428571429
1200*80%*0.35+1200*20%*0.35*x=1200*0.25+1200*0.25*86%
336+84x=300+258
84x=222
x=111/44
2.6428571428571428571428571428571