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
Tìm x biết:
a) 12 ( 2x - 6 ) - 43= 5^3
b) 7 ( 25 - 3x ) = 3^4 - 2^5
c) ( 3x - 5 ) + 3^4 = 6^0 = 5^3
d) 3x + 2x ( 2^3 . 5 - 3^2 . 4 ) + 5^2 = 4^4
e) 720 : [ 41 - (2x - 5 ) ] = 2^3 .5
Tìm x biết:
a,(2x+3/5)^2-9/25=0
b,(3x-1).(-1/2x+5)=0
c, (7/5)^x+1-(1/5)^x=-4/625
d,(2/3)^x+2+(2/3)^x+1=20/27
Tìm x biết
a, 1/7.x = 9/8 - 0,125
b, x - 25% . x = 1/2
c, ( 50%x + 9/4 ) . -2/3 = 17/6
d,( 3x/7 + 1 ) : ( - 4)3 = -1/28
e, (4/3 - 25% - 5/12 ) - 2x = 1,6 : 3/5
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)
1,Tìm x , biết:
a, 9 - 25 = ( 7 - x ) - (25 + 7)
b, 2 - x = 17 - (-8)
c, 11 - x + 84 =97
d, 5 - ( 2x - 4 )=4 - (-x +2 )
e, (2x -5 ) - (-7) = 2x +4
Tính bằng quy tắc chuyển vế
tìm x,biết
a, 1/12x-75%x=-1/2/3
b,(4,5-2x)(-1/4/7)=11/14
c,(-2x/5+1):(-5)=-1/25
Bài 1 : Tìm x thuộc Z, biết :
a) ( 7-x ) - ( 25+7 ) = -25
b) 4 - ( 7-x ) = x - ( 13-4 )
c) -20 + 8.( x+3 ) + 2x = 5^2 . 4 + 5x - ( -19 )
GIÚP MÌNH VỚIIIIIII
Tìm x Thuộc N biết:
a) 10+2x=4^5:4^3
b) 130-(100+x) =25
c) 2^2.(x+3^2)-5=55
d) 7^2-7(13-x) =14
e) 240:(x-5)=2^2.5^2-20
f) 250-10(24-3x):15=244
g) 6^2x-5^2x=11.2^2-70
h) 2^3x+5^2x=2(5^2+2^3)-33
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