(x减3)除以2等于7.5
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/08 11:29:28
x-2除以6-x+2除以3等于1+x-1除以2两边乘6x-2-2(x+2)=6-3(x-1)-x-6=9-3x3x-x=9+62x=15x=7.5
根据题意知:X/3=Y/4=Z/5设X/3=Y/4=Z/5=K则X=3K,Y=4K,Z=5K所以(X+Y)/(X-2Y+3Z)=(3K+4K)/(3K-2*4K+3*5K)=7K/(10K)=7/10
把x/2和x/3都通风,等于3x-2x=12,x=12再答:哦,是3x-2x=72再问:为什么再答:x/2与x/3的公分母是6,说以成6再问:弄出过程来再问:哦再答:要把12也成6再问:真是太感谢您啦
x/30-2=x/35等式分母同时乘以2107x-420=6x7x-6x=420x=420
x÷3+1=x÷2-1/42x+6=3x-3/2x=6+3/2=7又1/2
4/(x-1)-1/(2x-1)-2=4(2x-1)/(x-1)(2x-1)-(x-1)/(x-1)(2x-1)-2(x-1)(2x-1)/(x-1)(2x-1)=(8x-4-x+1-4x²
是(x-1)/(x-2+1)=3吗x-1=3x-3无解
再答:答案1/4
x/2-x/3=163x-2x=96x=96
(2x+1)/3-(x+1)/6=22(2x+1)-(x+1)=124x+2-x-1=123x=12-1x=11/3
X/3-5=(5-X)/2X/3-5=2.5-X/2X/3+X/2=2.5+5(1/3+1/2)X=7.55/6X=7.5X=9
解方程:1/(X-1)+2/(X-2)=3/(X-1)2/(X-2)=2/(X-2)变成了:X-2=X-1方程无解的,是题目有问题吧
(x+1)÷3=(x-1/4)÷2等式两边同时乘以6则(x+1)×2=(x-1/4)×32x+2=3x-3/4x=11/4
能再问:(列方程,有过程)再答:嗯再答:
(x+1)/2=(3x-1)/2-1x+3=3x-1x=2
x+x/2+x/3=5511x/6=55x=30
x÷(3/2x)=x-3/22x^2/3-x=3/24x^2-6x=9(2x-3/2)^2=9+9/4x=(±根号下45/4+3/2)/2
5*3-x÷2=8得15-x/2=8得x/2=15-8得x/2=7得x=14