a ) 3 / x - 2 = 4 / 2 x + 1 3 ( 2 x + 1 ) = 4 ( x - 2 ) 6 x + 3 = 4 x - 8 2 x = - 11 I 2 x = - 11 / 2 =-5 i 1/2 b ) 2 / 3 = 3 x + 2 / 2 x - 2 2 ( 2 x - 2 ) = 3 ( 3 x + 2 ) 4 x - 4 = 9 x + 6 - 5 x = 10 I - 5 x = - 2 c ) 6 x - 1 / x + 1 = 2 , 3 / 1 , 2 1 , 2 ( 6 x - 1 ) = 2 , 3 ( x + 1 ) 7 , 2 x - 1 , 2 = 2 , 3 x + 2 , 3 4 , 9 x = 3 , 5 I 4 , 9 x = 5 / 7 d ) - x / 3 x - 1 = 2 x / 1 - 6 x - x ( 1 - 6 x ) = 2 x ( 3 x - 1 ) - x + 6 x kwadrat = 6 x kwadrat - 2 x x = 0 Proszę : * *
a) 3/x-2 = 4/2x+1 6x+3=4x-8 6x-4x=-8-3 2x=-11 x=-5,5 b) 3/2 = 3x+2/2x-2 6x-6=6x+4 6x-6x=4+6 0≠10 c) 6x-1/x+1 = 2,3/1,2 7,2x-1,2=2,3x+2,3 7,2x-2,3x=2,3+1,2 4,9x=3,5 x=⁵/₇ d) -x/3x-1 = 2x/1-6x -x+6x²=6x²-2x 6x²-6x²=-2x+x 0=-x x=0
