a ) | x | = -2,1
=> x = 2,1
b ) | 5 - 3x | + 2/3 = 1/6
| 5 - 3x | = 1/6 - 2/3
| 5 - 3x | = -1/2
Khoogn thoax manx ddieeuf kieenj
7. Tìm x
a. |2x-5|+3x=12 b. |x+1|+|x+2|+|x+3|=4x
c. |x2+|x+2||=x2+3 d. |x2-3|=6
tim x :
1+2+3-4-5+6 = 3x + 3
Tim x,y,z biet (x-1)/2= (y+3)/4 =(z-5)/6 va 5z-3x-4y
tinh so huu ti x
2/3x-3/12=4/5-(7/x-2)
2x-3/3+-3/2=5-3x/6-1/3
tim x
(x-1).(x-2)>0
2x-3<0
(2x-4).(9-3x)<0
moi nguoi giup minh nhe cam on nhieu
tim x trong cac ti le thuc sau:
a, ..
-0,75/x=-1/1/2/-4/5 b, -1/3x+1/2/-5/4=-2/2/5/0,35 c, 2x-4/3=6/x-1 d, 2x-1/x+3
Tim x biết : 2/(|x-2|+2) = 3/(|6-3x|+1)
Tìm x
a) 6x(5x + 3) + 3x(1 – 10x) = 7 b) (3x – 3)(5 – 21x) + (7x + 4)(9x – 5) = 44
c) (x + 1)(x + 2)(x + 5) – x2(x + 8) = 27
d) 5x(12x + 7) – 3x(20x – 5) = - 100
e) 0,6x(x – 0,5) – 0,3x(2x + 1,3) = 0,138
Tim x biet: (3/4x+5)-(2/3x-4)-(1/6x+1)=(1/3+4)-(1/3x-3)
2/3x-1/2=x/6+[-2/3] mu2
Tim x