Răspuns :
a+b+c=63
a=c:4=>c=4a
b=a:2=>a=2b
C=4a=>c=4•2b=>c=6b
a+b+c=63
2b+b +6b =63
9b=63
b=63:9=>b=7=>a=2•7=14
c=6•7=>c=42
a=c:4=>c=4a
b=a:2=>a=2b
C=4a=>c=4•2b=>c=6b
a+b+c=63
2b+b +6b =63
9b=63
b=63:9=>b=7=>a=2•7=14
c=6•7=>c=42