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y=waga Bogdana
x+y=70
x+4=y-3
x+y=70
x-y=-7
2x=63
x=31.5
y=70-31.5
y=38.5
b- waga Bogdana
a+b=70
a+4=b-3
a=70-b
70-b+4=b-3
a=70-b
77=2b
a=70-b
b=38,5
a=31,5
b=38,5
y - waga bogdana
x+y=70
x+4=y-3
x-y=-7
2x=63
x=31.5
y=70-31.5
y=38.5