zadanie 1 a ] 2x + 5= 3x+2 b ] 3x-(2x_3)=(x+3)-(2x-4) c) 2/5x - 1/5 =1/3x+1/3 d) 2x-3/6 - 8-x/9 =x+3/18 e)(x+1) do kwadratu +x=(x-3)do kwadratu-x-3/2 zadanie 2 a) 3x+4=4x+3 b) (x+1)-(2x-4)=7(3x-4) c)2/5x-1/3=1/3x+1/5 d)x+3/3- 2+x/4 =3-2x/12 e) (x-3) do kwadratu - x-3/2 =(x+1)do kwadratu +x za karzdą odpowiedz daje naj
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a) 2x +5 + 3x+2 = -x = -3 x= 3
b) 3x-(2x-3)=(x+3)-(2x-4) =
3x-2x+3= x+3-2x+4=
x=-x+4
2x=4
x=2
c)2/5x - 1/5 =1/3x+1/3
6/15x-3/15=5/15x+5/15 //*15
6x-3=5x+5
x=8
d)2x-3/6 - 8-x/9 =x+3/18
2x-9/18-8-2x/18=x+3/18
2x-9-8-2x=x+3
-x=14
x=-14
e)(x+1) do kwadratu +x=(x-3)do kwadratu-x-3/2
xkwadrat +2x+1+x=xkwadrat - 6x+9 -x-3/2
-2x=-6,5
x=3,125
zad 2
a) 3x+4=4x+3
-x=-1
x=1
b) (x+1)-(2x-4)=7(3x-4)
x+1-2x+4= 21x-28
22x =-33
x= -33/22
c)2/5x-1/3=1/3x+1/5
6/15x-5/15=5/15x+3/15
x=8
d)x+3/3- 2+x/4 =3-2x/12
x+12-2+3x=3-2x
6x=7
x=7/6
e)(x-3) do kwadratu - x-3/2 =(x+1)do kwadratu +x
xkwadrat - 6x +9 -x-3/2 = xkwadrat + 2x +1 +x
-7x + 9- 3/2 = 3x +1
-14x +18 -3 = 6x +2
-20x= -13
x=20/13