a)1/3x-2=x+2 *3 x-6=3x +6 -12=2x /2 x=-6 b)1-6/7x=4/7 *7 7-6x=4 3=6x /6 x=0,5 c)6 (1/4x-2)=18 1,5x - 12=18 1,5x=30 /1,5 x=20 d)x/6-1/6=1 *6 x-1=1 x=2 e)-2(2x-1) = x/3 ?????gdzie jest = jeżeli tu to tak *3 -6(6x-3)=x -36x+18=x 18=-35x x=-0,51 f)2/5 (3-x)=-2 *5 2 (15-5x) = -10 30 -10x = -10 40=10x /10 x=4 g)3/4 (2-3x)=-6 *4 3 (8-12x)= -24 18 - 36x=-24 42=36x /36 x=1,17 h)1,5(x-3) =9-x 1,5x- 4,5= 9-x 2,5x= 13,5 /2,5 x=5,4 i)0,6 + x/2=x+1 *10 6+ 5x= 10x+10 5x=-4 /5 x= -4/5
a) 1/3x-2 = x+2 ⅓x - x = 2 + 2 -⅔x = 4 / × (-3/2) x = -6 b)1-6/7x = 4/7 -6/7x = 4/7 - 1 -6/7x = -3/7 / ×(-7/6) x = ½ c)6(1/4x-2) = 18 2/3x - 2 = 18 2/3x = 18+2 2/3x = 20 / × 3/2 x = 30 d) x/6-1/6 = 1 / ×6 x - 1 = 6 x = 7 e) -2(2x-1) = x/3 / ×3 -2(2x-1) = x -4x +2 = x -4x - x = -2 -5x = -2 / :(-5) x = 2/5 f) 2/5(3-x) = -2 6/5 - 2/5x = -2 -2/5x = -2 - 1⅕ -2/5x = -3⅕ /× (-5/2) x = 8 g) 3/4(2-3x) = -6 1½ - 1½x = -6 - 1½x = -6 - 1½ - 1½x =-7½ / × (-2/3) x = 5 h) 1/5(x-3) = 9-x 1/5x - 3/5 = 9 -x 1/5x + x = 9 + 3/5 1⅕x = 9 i 3/5 / 5/6 x = 8 i) 0,6+x/2 = x+1 / ×2 1,2 + x = 2x + 2 x - 2x = 2 - 1,2 -x =0,8 / ×(-1) x = -0,8
