1) (x + 1/2).(2/3 - 2x) = 0 2) 2/3x + 1/2x = 5/2 : 3 và 3/4 3) (2x - 3)(6 - 2x)= 0 4) -5(x + 1/5) - 1/2(x - 2/3) = 3/2x - 5/6
1) ( 2x + 1 ) ^2 = 25
2) 5 ^x+2 = 625
3) ( 2x - 3 ) ^2 = 36
4) ( 2x - 1 ) ^3 = - 8
5) ( x - 1 ) ^x+2 = ( x - 1 ) ^x + 6 với x thuộc Z 19 . x^2 + x = 0
tim số nguyên x biết
5/6 = x -1/x
1/2 = x +1/3x
2x -1/3=3x +1/4
4/3=2x-1/x
a,-2\3x+1\5=1\10
b,2|1\2x-3\8|-3\2=1\4
c,-5(x+1\5)-1\2(x-2\3)=3\2x-5\6
d,3(x-1\2)- 5(x+3\5)=-x+1\5
e,3\4-2.|2x-0,125|=2
f,2|1\2x-1\3|-3\2=1\4
g,4\5-1\2x=1\10
giải các bất phương trình sau và biểu diễn nghiệm trên trục số:
a)2x+2>4
b)3x+2.-5
c)10-2x>2
d)1-2x<3
e)10x+3-5x<=14x+12
f)(3x-1)<2x+4
g)4x-8>=3(2x-1)-2x+1
h)x^2-x(x+2)>3x-1
i)x+8>3x-1
j)3x-(2x+5)<=(2x-3)
k)(x-3)(x+3)<x(x+2)+3
l)2(3x-1)-2x<2x+1
m)3-2x/5>2-x/3
n)x-2/6-x-1/3<=x/2
o)x+1/3>2x-1/6-2
p)1+2x+1/3>2x-1/6-2
q)x+5/6-2x+1/3<=x+3/2
r)5x+4/6-2x-1/12>=4
Tìm x
a) 1/3x + 2/5( x - 1 ) = 0
b) (2x - 3 )(6 - 2x ) =0
c) 2|1/2x - 1/3 | - 3/2 = 1/4
d) 3/4 - 2 . | 2x - 2/3 | = 2
e) ( 3x - 1)(-1/2x + 5 ) = 0
g)-5(x + 1/5 ) - 1/2(x - 2/3 ) = 2/3x - 5/6
h) 3(x - 1/2 ) - 5(x + 3/5 ) = -3 + 1/5
i) 60%x + 2/3x = 1/3. 6và1/3 ( 6và1/3 là hỗn số )
giup mik voi tim x biet
1, 5-(3x+6)>-2x+1
2, -7.(x+2)-3x<6-11x
3, (x+1).(x+2)-x.(x+3)<4-x
4, 6-2x>17+(4-x)
tìm x biết:
(3x-1) [- 1/2x+5]=0
1/4+1/3:(2x-1)=-5
[2x+3/5]2 - 9/25=0
-5(x+1/5)-1/2(x-2/3)=3/2x - 5 /6
[x+1/2]x [2/3-2x]=0
17/2-|2x-3/4|=-7/4
2/3x-1/2x =5/12
(x+1/5)2+17/25=26/25
[x.44/7+3/7].11/5-3/7=-2
3[3x-1/2]+1/9=0
1)a)2x-13=25+6x
b)12-x=3x+6
c)40-(25-2x)=x
d)|x-3|=5
e)|x-3|+(x+2)+(x+1)=12
2)tính
a)(-1).(-2).(-3).(-4).(-5).[(-3)-(-5)]
b)1-2+3-4+5-6+...-98+99
3)tim x
a)(x-1).(y-2)=5
b)x.(y-3)=12
