Răspuns :
[tex]a+b+c=976 \\
a+b=376 \\
b+c=939 \\
-------- \\
Inlocuim: \\
376+c=976 \\
c=976-376 \\
\boxed{c=600} \\
a+939=976 \\
a=976-939 \\
\boxed{a=37} \\
b+37=376 \\
b=376-37 \\
\boxed{b=339}[/tex]
976-376=600 (c)
939-600=339 (b)
376-339=37 (a)
R:a=37
b=339 c=600
939-600=339 (b)
376-339=37 (a)
R:a=37
b=339 c=600