Răspuns:
a+b+c=56
a:2 rest 7
b:c=3 rest 3
‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐
a=?;b=?;c=?
b:c=3 rest 3....=> c>3...=> c=1+3......=>c=4
b:4=3 rest 3
b=4*3+3
b=12+3
b=15
15:4=3 rest 3
a:b=2 rest 7
a:15=2 rest 7
a=15*2+7
a=30+7
a=37
a=37
b=15
c=4
a+b+c=56
37+15+4=56
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