Tìm x:
a) 2/3 + 1/3 : x= 3/5
b) ( 2x/3 - 3 ) : (-10) = 2/5
c) | 2x + 1 | = 4
d) | 2x - 1 | +1 = 4
e ) 8 - | 1 - 3x | = 1/81
f) 1,5 x - 7/3 * x = 1,5 - 2/3
g) (1/2)^2x-1 = 1/8
h) ( -1/3 )^x-3 = 1/81
4(3-2x)^2=1/81
Tìm x biết
a/ x + 2006 = 2021
b/ 2x - 2016 = 2⁴.4
C/ 3. ( 2x + 1) ³ =81
b) x + 2 = - 9 – 11- (2x + 3)
c) 2x + 5 = x – 1 + (x + 3) – (x – 3).
d) |x – 4| = | -81 |.
a, 9.3x=81
b,2x:4=1
c,2x-64=2
d,2x=16
e,3^2.3^4.3x=3^10
f,2x+4.2x=5.2^5
4x-5 = 16
45 - 2x-1 =29
(2+x)2 = 144
(x-5)2 = 81
(13-x)4 = 81
A)4+96:[(2⁴x2+4):3²
B)15²-2x[81-(3+4)²]
C)50+[30-2x(14-48:4²)]
Giúp e với ạ
[1+3x]4=256
720:[x-140]=32-23.4
16x.43=512
[2x-1]4=81
Tìm số tự nhiên x,biết
a)34x+4 = 81x+3
b) ( 2x-1 )5 = 812 : 9