(3x-6).3=3^4
=> (3x-6).3=81
=> 3x-6=81:3
=> 3x-6=27
=> 3x=27+6
=> 3x=33
=> x=33:3
=> x=11
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Các câu hỏi tương tự
Tính :
1) 4(3x+4)
2) 4/3(5/3x+6)
3)(4/3x+7).5+2
4)(3/7x-6).(-7)+3x
rut gon
a,3x(2x-7)-3x(4x-5)
b,(-7x+8)(-2x+3)-7x(2x-4)
c,(2x-3)(3x2-2x+4)-(2x-3)(3x+4)
d,(-2+7)(3x-6)-(4x-5)(2x-6)
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 số nguyên x, biết
a) x – 2 = -6
b)15 – (x – 7) = -21
c)4.(3x – 4) – 2 = 18
d) (3x – 6) + 3 = 32
e) (3x – 6) . 3 = 32
f) (3x – 6) : 3 = 32
g) (3x – 6) - 3 = 32
h) (3x -2 mũ4 ).7mũ3 = 2.7mũ4
i) |x| = |-7| k) |x+1| = 2
l)|x – 2| = 3
m) x +|-2| = 0
o) 72 – 3.|x + 1| = 9
p) |x+1| = 3 và x+1< 0
q) (x – 2).(x + 4) = 0
5) | x-1| = 2x+3
6) | 1/3x - 4/3| = 1-4/3x
a, 3 - (7x - 6 ) - ( -4x + 2 ) = - ( -4 - 3x)
b, 4x + ( -8x + 3 ) = - (-7x +6 ) - 5 x
c, 6 - ( -4 -3x ) - ( 2 - 5x ) = 7 - ( 6x - 1 )
\(3\dfrac{1}{3x}-6\dfrac{3}{4}=3\dfrac{1}{4}\)
tìm x
a) x/7 = 6/21
b)2/3x -1/2=1/10
c)1/4+1/3 : x = -5
d)3x+17=2
đ)2/3x +1/4 =7/12
2x+3/10= 11/6 . 6/11
x : 4 1/3 = -2,5
(3x-16).343=2.74
53-7.x=57:55
(3x-6).3=34
xl ưc(180;84) và x>6
2x+3x=53