trzy butelki = 3b
dwa słoiki = 2s
3b + 2s = 2b + 3s czyli 3b = 3s
4b + 2s = 6kg
4b + 2s = 6bs
6bs : 6kg = 1kg
odp.: Butelka waży 1kg
b--cena butelki
s---cena sloika
{3b+2s=2b+3s
{4b+2s=6/:2
{3b-2b=3s-2s
{2b+s=3
[b=s
{2s+s=3
{b=s
{3s=3
[s=1kg
{b=1kg
butelka wazy 1kg tyle co sloik
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trzy butelki = 3b
dwa słoiki = 2s
3b + 2s = 2b + 3s czyli 3b = 3s
4b + 2s = 6kg
4b + 2s = 6bs
6bs : 6kg = 1kg
odp.: Butelka waży 1kg
b--cena butelki
s---cena sloika
{3b+2s=2b+3s
{4b+2s=6/:2
{3b-2b=3s-2s
{2b+s=3
[b=s
{2s+s=3
{b=s
{3s=3
[s=1kg
{b=1kg
butelka wazy 1kg tyle co sloik