计算5分之2x-1 1=2分之x-1

x分之2.25=2分之3.752.25：x=3.75：23.75x=2.25*23.75x=4.5x=1.212分之11:5分之4=36分之35：x12分之11x=5分之4*36分之3512分之11x

(1又21分之11)x(-18分之15)x(-1又3分之2)=32/21x5/6x5/3=(16x5x5)/(21x3x3)=400/189

计算就自己算吧,很简单解决问题可以帮您芍药的花期是32天,玫瑰的花期是芍药的8分之5可以得知玫瑰花期32*5/8=20玫瑰花期20天,牡丹的花期是玫瑰的4分之3可以得知牡丹花期20*3/4=15答：牡

(x-2)/(x+3)÷[x-3+5/(x+3)]=(x-2)/(x+3)÷[(x-3)(x+3)+5]/(x+3)=(x-2)/(x+3)÷[(x²-9+5)/(x+3)]=(x-2)/(

=1/(x-5)-6/(x+5)(x-5)-(x+1)/2(x+5)=2(x+5)/2(x+5)(x-5)-12/2(x+5)(x-5)-(x+1)(x-5)/2(x+5)(x-5)=(2x+10-1

x/2-5x/6+11=1+2x/3-43x/6-5x/6-4x/6=1-4-11-x=-14x=142分之x-6分之5x+11=1+3分之2x-42分之x-6分之5x-3分之2x=

x-4分之1=5分之3x=1/4+3/5x=17/208分之3+X=12分之11x=11/12-3/8x=13/24X-5分之2-7分之2=5分之3x=3/5+2/5+2/7x=1又2/7在右上角点击

3x/2-5/2=5-x5x/2=5+5/2x=2+1x=3

2/(x-3)=(1-x)/(3-x)-5,两边同乘以(x-3),得：2=-(1-x)-5(x-3),去括号,合并同类项,移项,得：4x=12,x=3.将x=3代入原方程检验,x-3=0,分母为0,分

把右边的式子通分再合并得2A+B=52B-3A=-11A=3B=-1

[(x+2)+1]/(x+2)-[(x+1)+1]/(x+1)=[(x+4)+1]/(x+4)-[(x+3)+1]/(x+3)1+1/(x+2)-1-1/(x+1)=1+1/(x+4)-1-1/(x+

=1/(x-5)-6/(x+5)(x-5)-(x+1)/2(x+5)=2(x+5)/2(x+5)(x-5)-12/2(x+5)(x-5)-(x+1)(x-5)/2(x+5)(x-5)=(2x+10-1

(-5/24)×(-15/18)×(-1-2/3)=-(5/24)×(5/6)×(5/3)=-125/432如果不懂,请Hi我,祝学习愉快!

先通分两边同乘以12得8x+9x=5x=5/17

25分之9X27分之7X50=9/25x50x7/27=18x7/27=14/313分之11X（5分之4X33分之26）=11/13x26/33x4/5=2/3x4/5=8/158分之5X2分之1+3

化简：原式=x^2/2-2x+2=1/2(x^2-4x+4)=1/2(x-2)^2

原式=2x/(x^2-4)-1/(2-x)+3/(x+2)=2x/(x-2)(x+2)+1/(x-2)+3/(x+2)=[2x+(x+2)+3(x-2)]/(x-2)(x+2)=(6x-4)/(x-2

先分别把第1、2项合并,第3、4项合并,最后加总,原式=[(5x+10)-(3x-3)]/[(x^2+x)-2]-[(5x+15)-(3x-6)]/[(x^2+x)-6]=(2x+13)/[(x^2+

九分之五x乘十一分之九剪九分之四x=24/9X=5/11-2X=-17/11X9/4X=153/44再问：应该大概也许答案不是分数再答：要不就是题目错再问：5/11X*9/11-4/9X=2再答：5/

1/(x^2-x)+(x-5)/(2x^2-2)=1/x(x-1)+(x-5)/2(x+1)(x-1)=2(x+1)/2(x+1)(x-1)+x(x-5)/2(x+1)(x-1)=(x^2-5x+2x