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a+b+c=972
a+b=c
a:2=b
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Răspuns :

c+c=972
2c=972
c=486
a=2b
2b+b=c
3b=486
b=162
a=2x162
a=324
a+b=+c=972
a+b=c
c+c=972
2c=972
c=486
a+b=c
a+b=486
a:2=b|×2
a=2b
a+b=486
2b+b=486
3b=486
b=162
a=162×2
a=324