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ewa-16lat
edek-13lat
ala-10lat
x-waga grochu 4x- waga kapusty 2kg- pusty garnek 4,5kg-pełny
x+4x+2=4,5
5x=4,5-2
5x=2,5/:5
x=0,5
4x=2 kg
2.
x- wiek ali x+3 - wiek edka x+3+3 - wiek ewy
x+3+x+3+3=29
2x=29-3-3-3
2x=20/2
x=10
3
36+37+38=111
52+54+56=162