a) (x+1):3=(2x-1):5-1b) X ∙ √27 = √48 + √75 =c) |x + 2| = 3
a)(x+1):3=(2x-1):5-1(x+1)* = (2x-1)*-1 /*15(x+1)* = (2x-1)* -15(x+1)*5=(2x-1)*3-155x+5=6x-3-155x-6x=-3-15-5-x=-23 /-1x=23b) X ∙ √27 = √48 + √75 x*= + x* = x = /x=3c) Ix+2I =3x+2=3x=3-2
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a)(x+1):3=(2x-1):5-1
(x+1)* = (2x-1)*-1 /*15
(x+1)* = (2x-1)* -15
(x+1)*5=(2x-1)*3-15
5x+5=6x-3-15
5x-6x=-3-15-5
-x=-23 /-1
x=23
b) X ∙ √27 = √48 + √75
x*= +
x* =
x = /
x=3
c) Ix+2I =3
x+2=3
x=3-2
x=1
/ - oznacza podzielić lub pomnożyć (zaleznie od podpunktu) obustronnie