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Jacek y
y=3x
y-15=x+15
y=3x
3x-15=x+15
2x=30
x=15
y=3x
y=3*15
y=45
Agnieszka ma 15 kasztanów , a Jacek 45.
3x - Jacek
3x-15=x+15
3x - x = 15+15
2x = 30
x=15
3x = 45
odp.
Agnieszka ma 15 a Jacek 45.