Ola ma 3 razy mniej lat niż Jurek, wspólnie mają 40 lat.
ILE lat ma Ola a ile jurek ?
x - Ola
z = 3x - Jurek
z + x = 40
4x = 40
x = 10
Wnioski:
Ola ma 10 lat
Jurek ma 30 lat
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x - Ola
z = 3x - Jurek
z + x = 40
4x = 40
x = 10
Wnioski:
Ola ma 10 lat
Jurek ma 30 lat