Răspuns :
a+ b+ c=545
c-a=310
c=310+ a
b=3× a
a+3 a+310+ a=545
5 a=545-310
a=235:5=47
b=3×47=141
c=310+47=357
c-a=310
c=310+ a
b=3× a
a+3 a+310+ a=545
5 a=545-310
a=235:5=47
b=3×47=141
c=310+47=357