3.5x-0.8x=0.81详细列方程-搜答案-神马作文网

3.5X+4.7X=24.68.2x=24.6x=3

3.5x+0.5x=12.84x=12.8x=3.2x-0.5x=10.50.5x=10.5x=210.8x+4=7.20.8x=3.2x=4

1.8(X+10)=0.8X+501.8X+18=0.8X+501.8X-0.8X=50-18X=323.5（X-10）=6.5（100-X）3.5X-35=650-6.5X10X=685X=68.5

（X+X)+(X-X)+(X*X)+(X/X)=1002X+0+X*X+1=1002X+X*X=99X(X+2)=99X=9再问：请问X(X+2)=99解为什么就等于9了呢没看懂再答：换成算术法你就明

x+3.5x=9.94.5x=9.9x=2.24.25x-x=4.553.25x=4.55x=1.410x-2.7x=58.47.3x=58.4x=86.8x+3.2x=10010x=100x=10

3.5x-1.5x=3.5-x3.5x-1.5x+x=3.5（3.5-1.5+1）x=3.53x=3.5x=3.5÷3x=7/6

0或41分之3200,用公式法解再问：是41分之80根号41....

20+0.8x=x-14x-0.8x=20+140.2x=34x=170112-4x=2x(80-4x)112-4x=160-8x8x-4x=160-1124x=48x=12

（3.5-0.8）=1.082.7x=1.08x=1.08÷2.7x=0.4再问：确定再答：当然了再问：你怎么知道再答：不信就算了

x-0.8x=46

x-0.8x=46(1-0.8)x=460.2x=46x=46÷0.2x=230如果帮到你,请记得采纳,O(∩_∩)O谢谢

次数---------系数5-------------54------------5*5+2=273------------27*5+3.5=138.52----------138.5*5-2.6=6

X-0.8X=2

X-0.8X=20.2X=2X=2/0.2X=10

x-4x=102 x-0.8x=22

x-4x=102-3x=102x=-34x-0.8x=220.2x=22x=110

x-0.8x=16 x=?

0.2x=16x=80

56566

3.5x-0.8x=0.812.7x=0.81x=0.81÷2.7x=0.3

#includesintjiesheng(intn)//用于计算阶乘如：3!{if(n=1)rerunn;returnn*hh(n-1)}doubledigui(intn,intx)//用以计算y=x

x+12.5=3.5x

x+12.5=3.5x移项3.5x-x=12.5合并同类项2.5x=12.5等式两边同除以2.5x=5

x+x=x+15

2x等于x+15x等于15