a: x+1>0
=>x>-1
b: -2x-3<0
=>-2x<3
=>x>-3/2
c: 4x+5>0
=>4x>-5
=>x>-5/4
d: -7x-3<0
=>-7x<3
=>x>-3/7
k: 3x+7>0
=>3x>-7
=>x>-7/3
l: -4x-1<0
=>-4x<1
=>x>-1/4
a,5(x-2)+3x (x-2)=0
b,2/3+5/2:x=2/4
c,2x(x-1/7)=0
d,11/12-(2/5+x)=2/3
e,3/4+1/4:x=2/5
g,2/3x+5/7=3/10
Tìm x, y biết
a)\(|2x-3|+|y-2|=0\)
b)\(|3x-4|+|x-y|=0\)
c) \(|2x+y-1|+|2y-3|=0\)
d) \(|x+y-5|+|2x-y+8|=0\)
Tìm x a) (x-1/3).(x+2/3)=0 b) (3/4x-9/16).(1,5+(-3):x)=0
(x-2/5).(x+2/7)>0
( 2x-1/2).(3x-1/3)<0
x+3/2 phần x-2/3 <0
Tìm x
Các bạn giúp mk nha mk cần gấp
Tìm x:
a) \(\dfrac{2}{3}\) - \(\dfrac{1}{3}\) . ( x - \(\dfrac{3}{2}\) ) - \(\dfrac{1}{2}\) . ( 2x + 1 ) = 5
b) ( x + \(\dfrac{1}{2}\) ) . ( \(\dfrac{3}{4}\) - x ) = 0
c) \(\dfrac{2x-1}{-3+2}\) = 0
1. Tìm x
a) \(|x-3|+|2x-6|=8\)
b) \(|3x-2|-|6-9x|=-|-16|\)
2. Tìm x, y
a)\(|x|+|x+2|=0\)
b)\(|\dfrac{1}{2}-\dfrac{1}{6}+x|=\dfrac{-2}{5}-|-y|\)
a) (x+2).(x-5) > 0
b) (x-3).(x+4) < 0
a. (2-x).(4/5-x)<0
b. (x-4/7):(x+1/2)>0
Nhanh nha! mình cần gấp!
(3 - 1/4 + 2/3) - ( 5 + 1/3 - 6/5 0 - ( 6 - 7/4 + 3/2 )
