rownania:
3r=s
3r+s=24
prosze!
podstawiam do drugiego za s=3r
3r+3r=24
6r=24
r=4
s=12
s = 3r
3r + 3r = 24
s= 3r
6r = 24 /:6
r= 4
s= 3*4
s= 12
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3r=s
3r+s=24
podstawiam do drugiego za s=3r
3r+3r=24
6r=24
r=4
s=12
3r=s
3r+s=24
s = 3r
3r + 3r = 24
s= 3r
6r = 24 /:6
s= 3r
r= 4
s= 3*4
r= 4
s= 12
r= 4