一元一次方程及解法1.80%*x+(500-x)*60%=500*74%
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![一元一次方程及解法1.80%*x+(500-x)*60%=500*74%](/uploads/image/z/1665522-18-2.jpg?t=%E4%B8%80%E5%85%83%E4%B8%80%E6%AC%A1%E6%96%B9%E7%A8%8B%E5%8F%8A%E8%A7%A3%E6%B3%951.80%25%2Ax%2B%EF%BC%88500-x%EF%BC%89%2A60%25%3D500%2A74%25)
一元一次方程及解法1.80%*x+(500-x)*60%=500*74%
一元一次方程及解法
1.80%*x+(500-x)*60%=500*74%
一元一次方程及解法1.80%*x+(500-x)*60%=500*74%
80%*x+(500-x)*60%=500*74%
0.8x+300-0.6x=370
0.8x-0.6x=370-300
0.2x=70
x=350
如果本题有什么不明白可以追问,
80%*x+(500-x)*60%=500*74%
0.8x+300-0.6x=370
0.8x-0.6x=370-300
0.2x=70
x=350
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80%X+500*60%-60%X-500*74%=0
20%X-500*14%=0
X=500*14%÷20%
X=70÷0.2
X=350
1.80%*x+(500-x)*60%=500*74%
0.018x+(500-x)0.6=370
0.018x+300-0.6x=370
0.018x-0.6x=370-300
-0.582x=70
x=-70000/582
=-35000/291
=-120.27491408934707903780068728522......
首先 1.80%*x+300-0.6x=370
其次 300-0.78x=370
接着 -0.78x=70
最后 x=8.94
80%*x+(500-x)*60%=500*74%
0.8x+300-0.6x=370
0.8x-0.6x=370-300
0.2x=70
x=350