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1/3X18+18X2/3

1/3X18+18X2/3回答:1/3X18+18X2/3 =18X(2/3+1/3) =18

18x2/3+0.38x2/7+1/3x18+5/7x0.3818x2/3+0.38x2/7+1/3x18+5/7x0.38 =18x(2/3+1/3)+0.38x(2/7+5/7)=18x1+0.38x1 =18.38

【悬赏】求一道数学题肯定是乙比甲多走了18*2=36千米 可以得到乙每小时比甲多走36/3=12千米/小时 甲乙两车速度比是2:3,乙比甲速度快(3-2)/

18x+3x-3=18-2(2x-1) 怎样解去括号,得:18x+3x-3=18-4x+2移项,得:18x+3x+4x=18+2+3整理,得:25x=23两边同除以

18x(一2/3)十13x2/3一4x2/3咋算亚孙=2/3x(-18+13-4)=2/3x(-9)=-6

1/3x+18=40%x怎么解?1/3X+18=40%X 1/3X+18=2/5X 2/5X-1/3X=18 1/15X=18 X=270

1/x3+1/2x4+1/3x5++1/18x20要列式哟!1/1x3+1/2x4+1/3x5++1/18x20=1/2(1-1/3+1/2-1/4+1/3-1/5+1/4-1/

1/(3x8)+2/(8x13)+3/(13x18)+4/(18x23)+5/(23x28.+(1/23-1/28)+6/5(1/28-1/33)=1/5x(1/3+1/8+1/13+1/18+1/23+1/28-2/11)方法大概是这样,码字果然好累。

1/2x+3=18-1/3x 这个方程如何解?方程两边乘以x:x(1/2x+3)=x(18-1/3x)1/2+3x=18x-1/3 1/2+1/3=18x-3x 5/6=15x x=

1+2 2+3 3x16+18 18x16+20 20x16+3等于多少?18.3 Ix-1I +3=9 19.7x-12(5/3x-1/2)=8-2/3(6x-9)20.x-1/2[x-1/3(x-6)]=1/6(x-6)+3 21.3/2[2/

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