Ala - x
Edek-x+3
Ewa x+3+3
Edek+Ewa - 39
x+3+x+3+3=39
2x+9=39
2x=39-9
2x=30
x=15
Odp. Ala ma 15 lat .
Liczę na naj ;>
Edek = x+3
Ala = x
Ela = x+3+3
2x+9=39/-9
Odp.: Ala ma 15 lat.
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Ala - x
Edek-x+3
Ewa x+3+3
Edek+Ewa - 39
x+3+x+3+3=39
2x+9=39
2x=39-9
2x=30
x=15
Odp. Ala ma 15 lat .
Liczę na naj ;>
Edek = x+3
Ala = x
Ela = x+3+3
x+3+x+3+3=39
2x+9=39/-9
2x=30
x=15
Odp.: Ala ma 15 lat.