E) -(x-2) + 3 (x-1) +2 =0 -x+2+3x-3+2=0 2x= -1 x=0,5 F) 2 (x +1/2)- 2/3 (3-6x) =x+2 2x+1 -2 +4x =x+2 5x=3 x= 3/5
Zadanie 3. [latex]e)~~ -(x-2)+3(x-1)+2=0 \ -x+2+3x-3+2=0 \ -x+3x=-2+3-2 \ 2x=-1 \ x= frac{1}{2} \\ f)~~2(x+ frac{1}{2} )- frac{2}{3} (3-6x)=x+2 \ 2x+1-2+4x=x+2 \ 2x+4x-x=2-1+2 \ 5x=3 \ x= frac{3}{5} \ x=0,6[/latex] Zadanie 4. [latex]e)~~3x+ frac{2}{4} +5=2x+ frac{1}{3} \ 3x-2x= frac{1}{3} -5- frac{1}{2} \ x= frac{1}{3} -5 frac{1}{2} \\ x= frac{2}{6} -5 frac{3}{6} \\ x=-5 frac{1}{6} \\ f)~~4- frac{x}{5} =8- frac{x}{4} \ - frac{x}{5} + frac{x}{4} =8-4 \\ - frac{x}{5} + frac{x}{4} =4~|cdot 20 \ -4x+5x=80 \ x=80 \\ i)~~2(x+1)- frac{3}{4} = frac{x}{5} \ 2x+2- frac{3}{4} = frac{x}{5} ~| cdot 20 \ 40x+40-15=4x \ 40x-4x=15-40 \ 36x=-25 \ x= frac{25}{36} [/latex]