Răspuns:
Andrei:
x-70=y
y*3-312=249
y*3=249+312
y*3=561
y=187
x-70=187
x=257
Alexandra:
x+70=y/3
y/3+312=401
y/3=401-312
y/3=89
y=89*3
y=267
x+70=267/3
x+70=89
x=19
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Răspuns:
Andrei:
x-70=y
y*3-312=249
y*3=249+312
y*3=561
y=187
x-70=187
x=257
Alexandra:
x+70=y/3
y/3+312=401
y/3=401-312
y/3=89
y=89*3
y=267
x+70=267/3
x+70=89
x=19