Răspuns :
a=913-396x2
a=913-792
a=121
b=123x2+75
b=321
c=39+185x4
c=779
Sper ca am ajutat
a+396×2=913 a+792=913 a=913-792 a=121 ; 123×2-b=75 246 -b=75 b=246-75 b=171 ; c-185×4=39 c-740 =39 c= 740+39 c=779