-5 < x < 1
\(\Rightarrow\) x \(\in\) { -4;-3;-2;-1;0 }
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-5 < x < 1
=> x thuộc (-1; -2; -3; -4; 0)
m.-5(x+1/5)-1/2(x-2/3)=3/2x-5/6
n.3(x-1/2)-5(x+3/5)=-x+1/5
Tìm x thuộc Z, biết
a, -5/7 + 1 + 30/-7 <_ x <_ -1/6 + 1/3 + 5/6
b, 1/2 - ( 1/3 + 1/4 ) < x < 1/48 - ( 1/16 - 1/6 )
c, ( x - 1/2 ) × ( x +3/4 ) < 0
d, 3/ ( x +2) ×( x +5) + 5/ ( x +5 ) × ( x+ 10) + 7/ ( x +10) ( x +17) = x / ( x+2) × ( x + 17)
1. | 4-2x | . 1/3 = 1/3
2. (-3)² : | x+(-1) | = (-3)
3. | 3/2 -x | + (-4/5) = -14/5
4. (-4/3) - | 2x + (-1) | = -7/3
5. -9 . | 36 - x/2 | = (-54)
6. 0,75 - | (-x) + 1/3 | = 0,25
7. (-6/5) + | x-9 |= (-6/5)
8. (-4) . | 3x - 1/5 | = 12
Tim x biet
A, 5/9 + x/-1 = -1/3
B, 1/5 + 2/20 + 121/165 <x< 1/2 + 156/72 + 1/3 ( x thuoc N)
C, x + 5/3 = 1/81
D, x-1/3 + 3x-5/2 + 2x/9 + -5x+3/9 = 210/420
Tìm X:
a) 1/3 X + 2/5 (X - 1)=0
b) 1/2|X|+1/2=5/2
c) -2/3-1/3(2X-5)=3/2
d) (3X-1)(1/2X+5)=0
đ) 3 và 1/3+5/6X=3 và 1/2
Bài2:Tìm x biết
a.1/3+2/3:x=-7
b.1/3x+2/5(x-1)=0
c.(2x-3)(6-2x)=0
d.x:3/4+1/4=-2/3
e.-2/3-1/3(2x-5)=3/2
f.2 l1/2x-1/3l-3/2=1/4
g.3/4-2.l2x-2/3l=2
h.(-0,6x-1/2).3/4-(-1)=1/3
i.(3x-1)(-1/2x+5)=0
j.1/4+1/3:(2x-1)=-5
k.(2x+3/5)2-9/25=0
l.3(3x-1/2)3+1/9=0
m.-5(x+1/5)-1/2(x-2/3)=3/2x-5/6
n.3(x-1/2)-5(x+3/5)=-x+1/5
Tìm x
x+5 chia hết x+1
x+5:x+1 (dư 0)
Tìm x
A, 62/7 × x = 29/9 × 3/56
B, 1/5 : x = 1/5 - 1/7
C, ( x + 1/4 - 1/3 ) : ( 2+ 1/6 - 1/4 ) = 7/46
1, Tìm x biết :
a) 13x - 1 = 10x + 5
b) 3. /x-1/ - 1 = 5 . /x - 1 / - 7
c) \((x)^{ 2}\) + 8x + 15 = 0
Tìm x thuộc Z:
1) -5x - (-3) = 13
2) 15 - ( x - 7) = -21
3) 45 - ( x - 9) = -35
4) | x - 2 | = 3
5) | x - 3| - 7 = 13
6) 72 - 3 . | x + 1 | = 9
7) 17 - ( 43 - | x | ) = 45
8) 3| x - 1| - 5 = 7
9) -12( x - 5) + 7( 3 -x) = 5
10) (x - 2) . ( x + 4 ) = 0
