Răspuns :
a+b+c=77
a=4c
b=a/2
b=4c/2
b=2c
4c+2c+c=77
7c=77
c=77:7
c=11
a=4*11
a=44
b=2*11
b=22
a=4c
b=a/2
b=4c/2
b=2c
4c+2c+c=77
7c=77
c=77:7
c=11
a=4*11
a=44
b=2*11
b=22
a+b+c=77
a=4c
b=a:2
c=a:4
a+a:2+a:4=77 (x cu 4)
4a+2a+a=308
7a=308
a=308:7
a=44
b=44:2=22
c=44:4=11
44+22+11=77
a=4c
b=a:2
c=a:4
a+a:2+a:4=77 (x cu 4)
4a+2a+a=308
7a=308
a=308:7
a=44
b=44:2=22
c=44:4=11
44+22+11=77