-2(2x + 3) + 4(-x + 3) = 10(-3x - 1)
<=> (-2).2x + (-2).3 + 4.(-x) + 4.3 = 10.(-30x) + 10.(-1)
<=> -4x - 6x - 4x + 12 = -30x - 10x
<=> -8x + 6 = -30x - 10
<=> -8x = -30 - 10 + 6
<=> -8x = -30 - 16
<=> -8x - 30 = -16
<=> 22x = -16
<=> x = -16 : 22
<=> x = -8/11
Tìm x
2.(x-1)+3.(3x-2)=x-4
3.(4-x)-2.(x-1)=x+20
4.(2x+7)-3.(3x-2)=24
3.(x-2)+2x=10
tìm X
1/4+2.(3.x-2/3)=1
(1/2+2X). (2x-3)=0
(4x-5).(5/4.x-2)=0
1/9-(2.x+1/2)mũ 2=0
9.(3x-1/2)mũ 2 =4
1/2.x+2/3.x-1=-10/3
X+1/12=-3/9
tìm x để:
(x+3).(4-x)=(1-x).(x-7)
(2x-1).(x-1)=(x+2).(2x+3)
(4-x).(3-x)=(1-x).(10-x)
(x+1).(x+4)=(x+2).(x+3)
(1-3x).(x+4)=(x+2).(-3x+2)
1. Tìm x biết:
a, (x-3)2x+4= 1
b, 3x-5= 2x-4
c, 1+2+3+......+x=45
d,3x. 3x+1=27
e, 3x-5=2x-4
2. Tìm x,y thuộc Z
a, x.y+6
b,(2x+1).(y-3)=10
1.Tìm x:
a) 4x - 3x +1= 5
b) (2x - 4) . 3x = 0
c) x . (x-1) - (x-1)= 0
2.Tìm x:
a) 7 . (x - 1) = 6x + 3
b) 8 . ( 2x - 3) -15x = 4
c) 7 . 10 + (x -1) . 2 = 100
tìm x
a) x/7 = 6/21
b)2/3x -1/2=1/10
c)1/4+1/3 : x = -5
d)3x+17=2
đ)2/3x +1/4 =7/12
2x+3/10= 11/6 . 6/11
x : 4 1/3 = -2,5
Tìm X biết:
X:4 1/3= -2,5
X: -3/5= -10/21
2/3 x-1/2=1/10
1/2x+1/2=5/2
-2/3-1/3(2x-5)=3/2
2/5.x+1/2=-3/4
1/3x-8=1/2
X-1/4=5/8.2/3
Tìm số nguyên x, biết:
1) -16 + 23 + x = - 16
2) 2x – 35 = 15
3) 3x + 17 = 12
4) (2x – 5) + 17 = 6
5) 10 – 2(4 – 3x) = -4
6) - 12 + 3(-x + 7) = -18
