作业帮2.37=1.333,23.7=2.872
来源：学生作业帮助网 编辑：作业帮 时间：2024/04/29 00:52:21
数学上定义：0.999······（9循环）=1所以1.999······（9循环）=2
答案是：x=A÷(A-1),y=A÷(A+1)不知道你学过方程式了没有,这就是个一元一次方程而已.解题过程：A+x=Ax,Ax-x=A,(A-1)x=A,x=A÷(A-1)同理得y=A÷(A+1)
1.222^2*9-1.333^2*4=(1.222*3)^2-(1.333*2)^2=3.666^2-2.666^2=(3.666+2.666)*(3.666-2.666)=6.332*1=6.33
1题：5x-8.7=10.925x=10.92+8.75x=19.62x=3.9242题：2.1×7+1.5x=23.714.7+1.5x=23.71.5x=23.7-14.71.5x=9x=6
2.37*0.1+23.7*0.09=2.37*0.1+2.37*0.9=2.379999*7778+3333*6666=9999*7778+3333*3*2222=9999*7778+9999*22
=2.37*82+2.37+13+2.37*5=2.37*(82+13+5)=2.37*100=237
奥数?打字不易,如满意,望采纳.
3.5x=17.5x=56x+23.7=6×5＋23.7=53.7
密度=G/(gV)=G/(26.7-23.7)=26.7/3=8.9
无穷无尽
9.4+9.9*99=9.4+(9.4+0.5)*99=9.4*100+0.5*99=940+49.5=989.53.2*2.25-3.2=3.2*(2.25-1)=3.2*1.25=3.2x10/8
题目应该是：2.37*6.3+2.37*3.7?2.37*6.3+2.37*3.7=2.37*（6.3+3.7）=2.37*10=23.7
7+1.4x=351.4x=35-71.4x=28x=28/1.4x=208x-0.3=23.78x=23.7+0.38x=24x=24/8x=35x-3x=252x=25x=25/2x=12.5
原式=2.37x6.3+2.37x3.7=2.37x(6.3+3.7)=2.37x10=23.7
2.37×2.7=2.37×（3-0.3）=2.37×3-2.37×0.3=7.11-0.711=6.399
8.5x—0.6x=23.77.9x=23.7x=3
2.37除以4减1.37乘以25%=(2.27-1.37)x0.25=0.254%乘以25%+2/3乘以30%=1+0.2=1.2解方程：x减15%x=2.040.85x=2.04x=2.43/5乘以
原式=(99+1)×2.37=100×2.37=237