3.8 x=26.8
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6.5x-3.8x=272.7x=27x=106x+8x=44814x=448x=323.4x-5.1X4=6.83.4x-20.4=6.83.4x=20.4+6.83.4x=27.2x=8
3.8+x=6.3x=6.3-3.8x=2.5验算:左边=3.8+2.5=6.3右边=6.3左边=右边x=2.5为方程的解x—7.9=2.9x=7.9+2.9x=10.8验算:左边=10.8-7.9=
5x-18.5=03.5x=18.8x=3.766x7-6x=9.642-6x=9.66x=32.4x=5.43.4x-48=26.83.4x=74.8x=2242x+25x=13467x=134x=
x=22.4-8.8x=6.84×3.81.3x+2=286x=16.8x=13.6x=25.9221.3x=26x=16.8÷6x=26÷1.3x=2.8x=20
3.8+x=6.3x=6.3-3.8=2.52.5x=14x=14/2.5=5.63.4x-48=26.8x=(26.8+48)/3.4=2242x+25x=13467x=134x=134/67=2x
1、3.8+x=6.3解X=6.3-3.8x=2.52、x-7.9=2.6解x=2.6+7.9x=10.53、2.5x=14解x=14÷2.5x=5.64、x除以3=1.2解x=1.2×3x=3.65
(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
(1)0.3x+13=25, 0.3x+13-13=25-13, &nb
1、10x=782、11x=1.13、3.1x=46.54、10x=43.6x=7.8x=0.1x=15x=4.36望采纳谢谢
3.8x-x=5.62.8x=5.6x=5.6除以2.8x=2
3.8x+5.2x=19.98(3.8+5.2)x=19.989x=19.98x=2.22
5.4X--4.5--3.8X=1.541.6X=1.54+4.51.6X=6.04X=6.04\1.6x=3.775
再答:怎么不采纳我呀?
3.4x-48=26.83.4x=26.8+483.4x=74.8x=74.8÷3.4x=22
8x-4x=0.644x=0.64x=0.64÷4x=0.160.2x-x=416-0.8x=416x=416÷(-0.8)x=-5207x+2.5x=3.89.5x=3.8x=3.8÷9.5x=0.
3.8x-x=0.562.8x=0.56x=5.6/28x=0.2
#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
2x等于x+15x等于15