Răspuns :
a+b+c=5400
b=2a
c+24=a
c=a-24
a+2a+a-24=5400
4a-24=5400
4a=5400+24
4a=5424
a=1356
b=2*1356=2712
c=1356-24=1332
b=2a
c+24=a
c=a-24
a+2a+a-24=5400
4a-24=5400
4a=5400+24
4a=5424
a=1356
b=2*1356=2712
c=1356-24=1332
a + b+c=5400
b=2a
c=a-24
inlocuim in ecuatie:
a + 2a + a-24=5400
4a-24=5400
4a=5376
a=1344
b=2688
c=1320