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y - wiek agaty
x = 3y
x + 5 = 2(y + 5)
x= 3y
3y + 5 = 2(y + 5)
x = 3y
3y - 2y = 10 - 5
x = 3y
y = 5
x = 15
kasia ma lat 15 a agata 5
a to drugie to chyba
7 * 8 = 56 > 50