2x-1/3x+2=2x+1/3x-2=>2x-1/3x=2x+1/3x-2-2=>2x=2x+1/3x+1/3x-4=>2/3x=4=>x=6
\(\Leftrightarrow\)-\(\frac{2}{3}\)x=-4
\(\Leftrightarrow\)x=6
Bài 2 Tìm x biết 1, (2x-2).(3x+1)-(3x-2).(2x-3)=5 2,(1-3x).(3x-5)-(2x-4)(2-3x)=x-6 3,(2x-1).(4x^2+2x+1)-(2x+1)(4x^2-2x+1)=5x+6 Giúp tớ với
Tìm nghiệm : a) (2x-3).(2x+3) B)(x-4).(x-1).(x-2) C)2x(3x-1)-3x(5+2x) D)(3x-2).(3x+2)-4.(x-1)
tìm x ;
a , | x | + | x + 2 | = 3
b , | 2x + 1 | + | x + 8 | = 4x
c, | 3x + 5 | + | 3 - 3x | = 2x - 1
d , | 2x - 1 | - | 3x - 3 | = 2x - 5 +( x - 2)
e , | 3x - 1 | + | x - 2 | = 2x + 3
Tìm x:
a) 3x.(1 - 2x) + 6x^2 - 7x = 8.(1 - 2x) - 9
b) 2x.(1 + 3x) - 3x.(4 +2x) = 3x - 4
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
/2x-1/-2x=1
/3x-1/=1-3x
/2x-2/=2x-2
1, Tìm x
a,3x.(2x+3)-(2x+5).(3x-2)=8
b,5x(x+2)-x.(2x-7)-3x^2=81
b1:
[4+2x]=-3x [3x-1]+2=x
[x+15]+1=3x [2x-5]+x=2
b2:
[2x-5]=x+1 [3x-2]-1=x
[3x-7]=2x+1 [2x-1]+1=x
Tìm x biết
2(x - 3) + 5 = 3x - 1
2x(3x + 2) - 5 = 3( 2x^2 - 2x + 1)
(3x - 2)(2x - 3) + 5 = 5
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