Răspuns:
Explicație pas cu pas:
notam cu x nr.de bomboane pt larina
cu y al surorii
x=5y
dupa ce isi impart bomboanele au:
x-18=y+18
5y-18=y+18
4y=36
y=9
x=45
i=5s
i-18=s+18=>i=s+18+18=>i=s+36
s+36=5s
5s-s=36=>s=36:4=>s=9 baloane are sora
i=5×9=>i=45 baloane are Irina
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Răspuns:
Explicație pas cu pas:
notam cu x nr.de bomboane pt larina
cu y al surorii
x=5y
dupa ce isi impart bomboanele au:
x-18=y+18
5y-18=y+18
4y=36
y=9
x=45
Răspuns:
i=5s
i-18=s+18=>i=s+18+18=>i=s+36
s+36=5s
5s-s=36=>s=36:4=>s=9 baloane are sora
i=5×9=>i=45 baloane are Irina