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wiek brata Ani- y
x=2y
x-3=3(y-3)
x=2y
2y-3=3y-9 /+3
x=2y
2y=3y-6 /-3y
x=2y
-y=-6 /*(-1)
x=2y
y=6
y=6
x=12
y-wiek brata
x=2y
x-3=3(y-3)
x=2y
2y-3=3y-9
x=2y
2y-3y=-9+3
x=2y
-y=-6 /:(-1)
x=2y
y=6
x=2*6
y=6
x=12
y=6
Spr.
x=2y
x-3=3(y-3)
12=2*6
12-3=3(6-3)
12=12
9=9
Odp.Ania 12 lat, a jej brat 6 lat.
Jeżeli będziesz miał jakieś pytania do zadania to pisz na priv.
2x - wiek Ani
(2x - 3)/(x - 3) = 3
2x - 3 = 3(x - 3)
2x - 3 = 3x - 9
2x - 3x = - 9 + 3
-x = - 6
x = 6
2x = 12
odp
brat ma 6 lat , a Ania 12 lat