\(2\left(x+4\right)-\dfrac{2}{3}x=9\)
\(\Leftrightarrow x\cdot\dfrac{4}{3}=1\)
hay \(x=\dfrac{3}{4}\)
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tìm x bết
a/ ( 3x - 1 )6 = (3x-1)4
b/ 5- / 3x -1 / = 3
c/ 9(x-1)2 -4/9 : 2/9 = 1/4
Tìm x, biết:
i) 4*3x+3x+1=63
k)9*\(\left(\dfrac{2}{3}\right)^{x+2}\)-\(\left(\dfrac{2}{3}\right)^x\)=\(\dfrac{4}{3}\)
a) (x - 4/9) mũ 2 = 1/4
b) 2 mũ 3x + 2 ... x + 5 = 4
Tìm x: A:(3x-4) (x-2)=3x (x-9)-3 B:(x-50) (-x+4)-(x-1) (x=3)=-2x2
a, 2x( 3x + 1 ) + 3x ( 4 - 2x ) = 7
b, 4(18 - 5x ) - 12( 3x - 7 ) = 15(2x - 16 ) - 6(x + 14 )
c, ( 3x + 2 ) ( 2x + 9 ) - ( x + 2 ) ( 6x + 1 ) = ( x + 1 ) - ( x - 6 )
Tìm x
Tìm x biết :
a, 4.(18 - 5x) - 12.(3x - 7) = 15.(2x - 16) - 6(x + 14)
b, 5.(3x + 5) - 4.(2x - 3) = 5x + 3.(2x + 12) + 1
c, 2.(5x - 8) - 3.(4x - 5) = 4.(3x - 4) + 11
d, (3x + 2)(2x + 9) - (x + 2)(6x + 1) = (x + 1) - (x - 6)
e, (8x - 3)(3x + 2) - (4x + 7)(x + 4)= (2x + 1)(5x - 1) - 33
bài 1 : timf x biết
x-2/3+x-2/4=2x-4/2=3x-6/9
Tìm x :
a) \(3^{x+1}\)=\(9^x\)
b) \(2^{3x+2}\) = \(4^{x+5}\)
tìm nghiệm của đa thức
C(x)=(3x-2).(x-4)
D(x)=x^2-9