2x7=3x-4

4x+3x7/10=13/24x+3x7/10=13/24x+3x7/10=13/2x＝11╱10

7^4-3x7^2-8x7^3化简(x+y)^2-2(x^2-y^2)+(x-y)^2其中x=15分之2Y=3分1以知M+N=9,MN=14求M^2-MN+N^2的值7^4-3x7^2-8x7^3化简

4x-3X7=29这个方程怎么解4x-3X7=29这个方程怎么解4x-3X7=29这个方程怎么解4x-3X7=294x-21=294x=29+214x=50x=50÷4x=12.5x=12.5太简单了

解方程x+2x7=28解方程x+2x7=28解方程x+2x7=28X=28-14=1414x+14=28x=14x=28-14=14x+2x7=28x+14=28x+14-14=28-14x=14x+

100x(3/1x4+3/4x7+3/7x10+.3/97x100)=?注：1x4、4x7、7x10等均为分母的大小100x(3/1x4+3/4x7+3/7x10+.3/97x100)=?注：1x4、

(10+x)x7/2-(10-x)x7/2=28如何解方程(10+x)x7/2-(10-x)x7/2=28如何解方程(10+x)x7/2-(10-x)x7/2=28如何解方程(10+x)x7/2-(1

问几道解方程x/6-x=（x-3）/6x-1=1/2x+1/4x+1/8x+1/16x+1/32x77/x=2.5*77/x+2.4要注明是哪一题问几道解方程x/6-x=（x-3）/6x-1=1/2x

x2+3x+1=0求x7+1/x7的值x2+3x+1=0求x7+1/x7的值x2+3x+1=0求x7+1/x7的值题目很典型,如图

x2+3x+1=0,求x3+1/x3与x7+1/x7的值.x2+3x+1=0,求x3+1/x3与x7+1/x7的值.x2+3x+1=0,求x3+1/x3与x7+1/x7的值.x^2+3x+1=0,求x

4X+8.60x2=304X-X=397X+90x7=14633X-2+X=50X=多少(是小题,格式,4X+8.60x2=304X-X=397X+90x7=14633X-2+X=50X=多少(是小题

lim[1/(1x4)+1/(4x7)+1/(7x10)+...+1/(3n-2)x(3n+1)]=_____lim[1/(1x4)+1/(4x7)+1/(7x10)+...+1/(3n-2)x(3n

sn=1/1x3+4/3x5+9/5x7+```````+n2/(2n-1)x(2n+1)sn=1/1x3+4/3x5+9/5x7+```````+n2/(2n-1)x(2n+1)sn=1/1x3+4

15(18+X)x7/30=18x5+3X15(18+X)x7/30=18x5+3X15(18+X)x7/30=18x5+3X15(18+X)x7/30=18x5+3X化简得：（18+X）*7/2=9

第一道（-18分之7）x7分之3x（-2.4）第二道2除以（-7分之3）X7分之4除以（-5又7分之1）第一道（-18分之7）x7分之3x（-2.4）第二道2除以（-7分之3）X7分之4除以（-5又7

3/4x()=()x7/3()-1/3=()+1/3=1.''||/||/-.(||\_._\||\\`;||>|/||///|||//||\(\||``|||3/4x()=()x7/3()-1/3=(

(2X2)/1X3+(4X4)/(3X5)+(6X6)/(5X7)+...+(20X20)/(19X21)==?(2X2)/1X3+(4X4)/(3X5)+(6X6)/(5X7)+...+(20X20

4x-6x7.2=9.8怎么解方程急4x-6x7.2=9.8怎么解方程急4x-6x7.2=9.8怎么解方程急4x-6x7.2=9.84x-43.2=9.84x=9.8+43.24x=53x=53÷4x

3/2x(2.25+25/6)x7.7％]-15/13=?3/2x(2.25+25/6)x7.7％]-15/13=?3/2x(2.25+25/6)x7.7％]-15/13=?-0.413

3/2x(2.25+25/6)x7.7％]-15/13=?3/2x(2.25+25/6)x7.7％]-15/13=?3/2x(2.25+25/6)x7.7％]-15/13=?3/2x(2.25+25/

4分之1x+4x7=24解比例4分之1x+4x7=24解比例4分之1x+4x7=24解比例4分之1x+4x7=241/4x=24-281/4x=-4x=-16如果本题有什么不明白可以追问,你好！4分之