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解方程:[(x+1)/2]%1=2+(2%x)/4

2%x+2000=4%x+1200 4%x-2%x=2000-1200 0.02x=800 x=800/0.02 x=40000 谢谢,请采纳

2%x×15+ 1 2 =11 , 0.3x+ 1 2 =11,0.3x+ 1 2 - 1 2 =11- 1 2 , 0.3x=10.5, 0.3x÷0.3=10.5÷0.3, x=35.

(X十264)X3%十xx2%=264 解:3%X+7.92+2%X=264 5%X=264-7.92 X=5121.6

x=40÷2% x=2000

400升的水要配1~2%的柠檬酸怎么来计算 设需要x吨柠檬酸,柠檬酸溶液浓度=x/(40+x)*100%(1)2%=x/(40+x)*100%解得:x=40/49≈0.816(吨)(2)3%=x/(40+x)*100%解得:x=120/97

2%=x×33.33%+(1-x)×(-25%) 2=33.33x+(x-1)×25 58.33x=27 x=27÷58.33 x≈0.463

X/(1-2%)+(7650-X)/(1+10%)=7650/(1+2%) X/0.98+(7650-X)/1.1=7650/1.02 (1.1x+0.98*7650-0.98x)/0.98*1.1=7650/1.02 0.12x=0.98*7650*1.1/1.02-0.98*7650 x=0.98*7650*1.1/(1.02*0.12)-0.98*7650/1.02 x=0.98*7650/(0.12*1.02)(1.1-1.02) x=0.9...

http://www.baidu.com/s?ie=gb2312&bs=2.%D6%B1%CF%DFL%B1%BB%C1%BD%CC%F5%D6%B1%CF%DFL1%3B4x%2By%2B3%3D0%BA%CDL2%3B3x-5y-5%3D0%BD%D8%B5%C3%B5%C4%CF%DF%B6%CE%D6%D0%B5%E3%CE%AAP%28-1%2C2%29%2C%C7%F3%D6%B1%CF%DFL%B5%C4&sr=&z=&cl=3&f=8...

财管第二章吧😄 (1-2%)(1+x)-1=15.38% 0.98+0.98x-1=0.1538 0.98x-1=-0.8262 0.98x=0.1738 x=0.1773

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