x-0 .2 x=6.4
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19.8x+0.2x=2.5×2⇒ (19.8+0.2)X=5⇒ 20X=5⇒ X=0.25
再答:有什么问题还可以咨询我
(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
0.2x+0.4x=120.6x=12x=12÷0.6x=2020x+x=42021x=420x=420÷21x=20
3-0.2=1.2X-0.8X2.8=0.4XX=7
解题思路:列方程进行求解解题过程:答案见附件最终答案:略
6.4x-3.5=3.6x+2.16.4x-3.6x=2.1+3.52.8x=5.6x=2不明白可追问,祝学习进步!
(80.51-x)/x=0.2(80.51-x)=0.2x0.2x+x=80.511.2x=80.51x=80.51÷1.2x=8051/120(120分之8051)
当然能算出来X-X×0.2=1.18(1-0.2)X=1.180.8X=1.18解得X=1.475
0.2(45-x)=13-x0.2*45-0.2x=13-x9-0.2x=13-xx-0.2x=13-90.8x=4x=5很高兴为您解答,【the1900】团队为您答题.请点击下面的【选为满意回答】按
再答:采纳啊。再答:谢谢。
x-0.2x=800.8X=80X=100在右上角点击【评价】,然后就可以选择【满意,问题已经完美解决】了.
1,3x-4+2x=4x-35x-4x=4-3x=12,2.8x=19.32-6.4x2.8x+6.4x=19.329.2x=19.32x=2.13,0.4(x-0.2)+1.5=0.7x-0.380
x-[(x-3500)*0.2-555]=9553x-[0.2x-700-555]=95530.8x+1255=95530.8x=8298x=10372.5
您好:0.2(X-11)=12-0.3X0.2x-2.2=12-0.3x0.3x+0.2x=12-2.20.5x=9.8x=9.8÷0.5x=19.6不明白,可以追问如有帮助,记得采纳,谢谢祝学习进步
(2x-5)(3x+2)-6(x+1)(x-2)=6x²+4x-15x-10-6(x²+x-2x-2)=6x²-11x-10-6(x²-x-2)=6x²
#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
(1)3x(x+0.2)=4x(x-1.1)3x+0.6=4x-4.44x-3x=0.6+4.4x=5(2)乘以0.8得4(1-x)=3x4-4x=3x4=7xx=4/7(7分之4)(3)1.1x1.