Các câu hỏi tương tự
tìm x
a) (x+1/5)mũ 2 +17/25=26/25
b)-1 5/27 - (3x-7/9)mux3= -24/27
c) -2/7<x/3<11/4
tính nhanh
a)(1999/2011-2011/1999)-(-12/1999-12/2011)
b) 67/111+2/33-15/117).(1/3-1/4-1/12)
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
(11/5+3/5×x) =3/4
(3/15-x) ×1/3=2/5
X÷46/15=25/12
3/4+2×|2x-2/3|=2
X÷3/4+1/4=2/3
help với, nghĩ mãi ko ra :((
a, (2x - 3) . (6 - 2x) = 0
b,|1/2.x - 1/3| - 3/2 = 1/4
c, (2x + 3/5)mũ 2 ngoài ngoặc = 9/25
d, 11/3.(1/5 - 1/2) < hoặc = x < hoặc = 3/11.(1/5 +2/3 - 1/2)
e, 4,25 - (25/8 - 1,105) < x < 9,1 - (6,85 - 11/4)
làm ơn giúp e :((
a) -2x - (-17)= 9 b) 11 + (15 – x) = 1
| c) 53 – 7x = 57 : 55 |
b) 11 + (15 – x) = 1
d) 29 +9.x2 = 110
e) (2x-4).(3-x) = 0
g) 2x + 1 chia hết cho x -2
Bài 1:a)-2x-3.( x-17 ) 34-2.( -x+25 )b)17x+3.( -16x-37 ) 2x+43-4xc){-3x+2. [ 45-x-3 ( 3x+7 ) -2x]+4x} 55g)-103-57: [ 5.( 2x-1 )2-( -9 )0 ]Bài 2:a)-5.( -x+7 )-3.( -x-5 )-4.( 12-x )+48b)7.( -x-7 )-4.( -2x-11 )7.( 4x+10 )+9c)-2.( 15-3x )-4.( -7x+8 )-5-9.( -2x+1 )d)5.( -3x-7 )-4.( -2x-11 )7.( 4x+10 )+9e)4( x-2 )2-13( -3 )2.2-11.( -3 )f)-52-( 2x-1 )3( -13 ).( -3 )
Đọc tiếp
Bài 1:
a)-2x-3.( x-17 )= 34-2.( -x+25 )
b)17x+3.( -16x-37 )= 2x+43-4x
c){-3x+2. [ 45-x-3 ( 3x+7 ) -2x]+4x} = 55
g)-103-57: [ 5.( 2x-1 )2-( -9 )0 ]
Bài 2:
a)-5.( -x+7 )-3.( -x-5 )=-4.( 12-x )+48
b)7.( -x-7 )-4.( -2x-11 )=7.( 4x+10 )+9
c)-2.( 15-3x )-4.( -7x+8 )=-5-9.( -2x+1 )
d)5.( -3x-7 )-4.( -2x-11 )=7.( 4x+10 )+9
e)4( x-2 )2-13=( -3 )2.2-11.( -3 )
f)-52-( 2x-1 )3=( -13 ).( -3 )
tính :
a) 1/7 : 5/17 - 3/2 . ( 1/6 - 7/12 )
b) 25/77 - ( 1/5 - 7/15 ) : 10/11 : |-3/4|
c) 4/7 + 15/4 - 11/4 + 3/7 -1/2 + 1/3
tìm x biết :
a) 3/4 . x + 1/2 =3/5
b) x - 5/4 = 1/3 - 3/4 .x
c) -2/3 . ( x - 1/4 ) = 1/3 . ( 2x-1)
tìm số nguyên x, biết
( 2x + 4 ) ( x + 2 ) = 0
x - ( 25 - 9 ) = 11 - ( 15 + x )
a) x : 4/5 = 28/5 : 5/4
b) 8/15 . x + 5/7 = 2/21
c) 7/8-1/6.x = 1/4
d) [ 3 và 1/2 - 2.x ].4/3=7 và 1/3
e) | x-1/2 |-3/4=0
f) [2.x +1/3].[5/7-x]=0
g) x-2/121=-11/6.6/7
h) (-3).x +0,75.x=-1 và 3/4
i) [x+1/5]^2 + 17/25 = 26/25
j) |2x-1| = (-4)^2