x-0.2x=3.5
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3.5X+4.7X=24.68.2x=24.6x=3
3+X=7/2.8X=5/2-3X=-1/22.5X=17.5X=74X-0.32=0.464X=0.78X=0.195
这个一元等式就太没有啥难度了赛x-3.5x+5=80%x-2.5x+5=0.8x5=0.8x+2.5x5=3.3xx=5除以3.3毫无悬念嘛能请问楼主是想干嘛呢?该不会忽悠我的吧那我还是匿名回答好了不
(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
0.2x+0.4x=120.6x=12x=12÷0.6x=2020x+x=42021x=420x=420÷21x=20
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
3-0.2=1.2X-0.8X2.8=0.4XX=7
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
(1)6分之x-7分之x=84x/42=84x=42*84=3528(2)x-x/6=95x/6=9x=54/5=10.8(3)3.5*2-0.2x=20.2x=5x=25(4)30%x+15=900
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.
x-[(x-3500)*0.2-555]=9553x-[0.2x-700-555]=95530.8x+1255=95530.8x=8298x=10372.5
(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
25%x-0.2x=111/4x-1/5x=111/20x=11x=22035%x+1=3.57/20x=2.5=5/2x=5/2*20/7x=50/7x-25%x=110x-1/4x=1103/4x
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
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.