\(\left(2x-1\right)^3=125\Leftrightarrow\left(2x-1\right)^3=5^3\)
\(\Leftrightarrow2x-1=5\Leftrightarrow2x=6\Leftrightarrow x=3\)
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B) 17X - ( -16X - 37 ) + 2x + 43
C) -2x -3.( x-17) = 34 -2 (-2x +25)
D) 17x+ 3. ( -16x -37) = 2x +43 -4x
E) {- 3x +2. [45 - x-3 (3x + 7) - 2x] + 4x} =55
F) -103 - 57 : [ -2 ( 2x -1 )2 - ( -9 )0 ] - 106
G) -2x + 3. { 12-2 [ 3x - ( 20 + 2x ) - 4x ] + 1} = 45
tìm x
17x – ( -16x – 37) = 2x +
-2x –3. (x – 17) = 34 – 2(-x + 25
17x + 3. ( -16x – 37) = 2x + 43 - 4x
103 -57: [-2. (2x – 1)2 – (-9)0] = -106
3x – 32 > -5x + 1
15 + 4x < 2x – 145
-3. (2x + 5) -16 < -4. (3 – 2x)
-2x + 15 < 3x – 7 < 19 – x
x + (x+1) + (x+2) + (x+3) + .... + 13 + 14 = 14
25 + 24 + 23 +...+ x + (x - 2) + (x – 3) = 25
tìm số ngyên x :
a) -2x-(x-17)=34-(-x+25)
b) 17x-(-16x-37)=2x+43
c) -2x-3.(x-17)=34-2(-x+25)
d) 17x+3.(-16x-37)=2x+43-4
e) {-3x+2.[45-x-3(3x+7)-2x]+4x}=55
g)103-57; [-2.(2x-1)2 -(-9)0 ] =-106
Tìm x thuộc Z biết :
a, ( 2x - 37) chia hết cho ( 2x + 1 )
b, ( 3x - 49) chia hết cho ( 3x-1)
c,( 4x - 57 ) chia hết cho ( 4x+3)
giúp mk với ạ :<
- mk cảm ơn trước
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 )
a) 3.(37-x)-561 b) 95-(2x-1)4414 c) -45+(x-15)23 d) 94-(x+78)123
Đọc tiếp
a) 3.(37-x)-56=1 b) 95-(2x-1)4=14 c) -45+(x-15)=23 d) 94-(x+78)=123
tìm x
a,-2x-(x-17)=34-(-x+25)
b,17x-(-16x-37)=2x+34
c,-2x-3.(x-7)=34-2(-x+25)
d,17x+3.(-16x-37)=2x+43-4x
e,-2x+3.{12-x[3x-(20+2x)-4x]+1}=45
{-3+2.[45-x-3(3x+7)-2x]+4x}=55-103-57:[-2(2X-1)^2-(-9)^0]=-106