a+b+c=500.000
2a+b+2c=879.112
b+6.787=c
2a+2b+2c=1.000.000
2a+b+ 2c= 879.112
-
0a+b+0c=1000000-879112
b=120.888
b+6.787=c
120888+6787=c
c=127675
a+b+c=500.000
a+120888+127675=500000
a=5000000-120888-127675
a=251437
Verif
2a+b+2c=879.112
2x251437+120888+2x127675=879112
corect