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35/5=7
x-pierewsza liczba
y- druga liczba
x-y=30
x/y=7 I*y
x-y=30
x=7y
7y-y=30
x=7y
6y=30 I:6
x=7y
y=5
x=7*5
x=35
y=5
spr.
35-5=30
35/5=7
30=30
7=7