Jeżeli od pewnej liczby odejmiemy iloczyn liczb (-7) i (-3) to otrzymamy -21. Co to za liczba? Ułóż równanie
x- 21 =21
x=42
x - 21 = 21 (-7) i (-3)
POZDRO :D
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x- 21 =21
x=42
x - 21 = 21 (-7) i (-3)
x=42
POZDRO :D