9. a> 1/3x -2 = x +2 /x3 b> 1- 6/7x = 4/7 /x7 x-6 = 3x + 6 7 - 6x = 4 x-3x = 12 7-4 = 6x -2x = 12 / :-2 3 = 6x /:3 x = -6 x = 1/2 c> 6(1/4x -2) = 18 d> x/6 - 1/6 = 1 /x6 6/4x -12 = 18 /x4 x - 1 = 6 6x - 48 = 72 x = 7 6x = 120 x = 20 e> -2 (2x -1 )= x/3 /x3 f> 2/5 (3-x) = -2 /x5 - 6 ( 2x - 1 ) = x 2 (3 -x) = -10 -12x +6 = x 6 -2x = -10 -13x = -6 /:-13 -2x = -16 /:-2 x = 6/13 x = 8 g> 3/4 ( 2-3x ) = -6 /x4 h> 1/5 (x-3) = 9 - x /x5 3 (2-3x) = -24 1 (x-3) = 45 -5x 6 - 9x = -24 x -3 = 45 - 5x -9x = -30 /:-9 6x = 48 /:6 x = 3 i 1/3 x = 8 i> (0,6 + x):2 = x +1 0,3 + 1/2x = x +1 /x2 0,6 + x = 2x + 2 -x = 1,4 /:-1 x = -1,4 SORKI ŻE TYLKO ZADANIE 9 ALE ZAD.11 JEST TEZ DŁUGIE I ZROBIĘ ODDZIELNIE :>
zad9 a) 1/3 - 2=x+2 |Razy 3 1-6=3x+6 |-6 1-6-6+3x -11=3x | /3 x=-11/3 b) 1-6/7x=4/7 | razy 7 1-6x=4 |-1 6x= 4-1 6x=3 |/6 x =0,5 c) 6(1/4x - 2)=18 3/2x-12=18 |razy2 3x -24=36 | +24 3x=36+24 3x=60 |/3 x=20 d) x/6-1/6=1 |razy6 x-1=6 |+1 x=6+1 x=7 e) -2(2x-1)=x/3 |razy3 -6(2x-1)=x -12x+6=X |+12x 6=x+12x 6=13x|/13 x=6/13 f) 2/5(3-x)=-2 |razy5 2(3-x)=-10 6-2x=-10|-6 -2x=-10-6 -2x=-16|/-2 x=8 g)3/4(2-3x)=-6 |razy4 3(2-3x)=-24 6-9x=-24 -9x=-24-6 -9x=-30|/-9 x=30/9 h)1/5(x-3=9-x|razy5 x-3=45-5x x+5x=45+3 6x=48 |/6 x=8 i)0,6+x/2=x+1|razy2 0,6+x=2x+2 x-2x=2-0,6 -x=1,4 |/-1 x=-1,4 zad11 a) x/3+1=5/6+x/2|razy6 2x+6=5+3x 2x-3x=5-6 -x=-1 |/-1 x=1 b)2x-3/4=1/2+x |razy4 2x-3=2+4x 2x-4x=2+3 -2x=5 x=-5/2 c)x+2/9+x-1/3=1|razy9 x+2+3x-3=9 4x=9+3-2 4x=10|/4 x=10/4 d)2x+3/5=2-x/3+x|razy15 6x+9=10-5x+15x 6x-10x=10-9 -4x=1|/-4 x=-1/4 e)3x-5/-5x-1/10=0 |razy10 15x-25-5x+1=0 15x-5x=-1+25 10x=24|/10 x=24/10 f)x/2=2/5(4-x)-4|razy10 5x=4(4-x)-40 5x=16-4x-40 5x+4x=-40+16 9x=-24|/9 x=-24/9 g)2x-1/5-x-2/2=0,7x |razy10 4x-2-5x+10=7x 4x-5x-7x=-10+2 -8x=-8|/-8 x=1 h)2x-(3x+5)/4=-1/4x-1 |razy4 8x-3x-5=-x-4 8x-3x+x=-4+5 6x=1 |/6 x=1/6
