Odpowiedź:
x-Zosia
y-Kasia
z-Jola
x+y=66kg
x+z=60kg
y+z=84kg
y=84kg-z
x=66kg-84kg+z
z=60kg-66kg+84kg-z
2z=78kg
z=39kg
y=45kg
x=21kg
x+y+z=105kg
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Odpowiedź:
x-Zosia
y-Kasia
z-Jola
x+y=66kg
x+z=60kg
y+z=84kg
y=84kg-z
x=66kg-84kg+z
z=60kg-66kg+84kg-z
2z=78kg
z=39kg
y=45kg
x=21kg
x+y+z=105kg