当x等于什么时2x 1/3与3x 1-搜答案-智慧作业帮

21/20

在实数范围内,x等于1

(2-3x)/3-(x+1)/4=-14(2-3x)-3(x+1)=-128-12x-3x-3=-1217=15xx=17/15

x-2除以3=x+1除以2-2/3*2=X+1X=-7/3.

(x-1)/(x-3)=-(x+3)/55(x-1)=-(x+3)(x-3)x^2+5x-14=0(x+7)(x-2)=0x+7=0x1=-7x-2=0x2=2

(x-1)/(x-3)=-(x+3)/55(x-1)=-(x+3)(x-3)x^2+5x-14=0(x+7)(x-2)=0x+7=0x1=-7x-2=0x2=2

3x-5=-(1-2x)解得x=4

-7/2

当x不等于负三分之二时有意义当x等于负二分之三时值位零

(5x+2)/3与3-(1-2x)/9互为相反数则(5x+2)/3+【3-(1-2x)/9】=0解得X=-50/17

4x+2=3x-9x=-11

(x+1)/2=-(x+2)/3两边乘以63(x+1)=-2(x+2)3x+3=-2x-43x+2x=-3-45x=-7x=-7/5当x=-7/5时,代数式2分之x+1与3分之x+2互为相反数

(1-2x)/3+3=(3x+1)/77(1-2x)+63=3(3x+1)7-14x+63=9x+3-23x=-67∴x=67/23

若3x-4与2(x-3)互为相反数,则3x-4+2(x-3)=0即,5x-10=05x=10x=2

（x-8）/3=(1/2)-8-(x/6)2X(x-8)=3-48-x等式两边同乘62x-16=-45-x去括号3x-16=-45等式两边同加x3x=-29等式两边同加16x=-29/3当x等于-29

15x-3(2x-5)的值与17(x+2)-5(2x-1)的值相等9x+15=7x+392x=24x=12

2x+9与3-x互为相反数则相加等于0所以(2x+9)+(3-x)=02x+9+3-x=0x+12=0x=-12

x-(2x-3)=6,可得3-x=6,x=-3你先设置我最佳答案后,我百度Hii教你.

(2x-1/3+2)+(-1)=02x+5/3-1=02x=-2/3x=-1/3

5x+6-2+3x=28x=2-6+28x=-2x=-2.5