Ania jest o 7 lat młodsza od Piotra.Za 3 lata będzie 2 razy młodsza od Piotra.Ile lat ma Piotr
x - wiek Piotra
x-7 - wiek Ani
2(x-7+3) = x+3
2(x-4) = x+3
2x-8 = x+3
x = 11
Piotr ma 11 lat.
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
x - wiek Piotra
x-7 - wiek Ani
2(x-7+3) = x+3
2(x-4) = x+3
2x-8 = x+3
x = 11
Piotr ma 11 lat.