Răspuns :
a+b+c=899
a+b=675
c=b+121
a+b+c=899
675+c=899
c=899-675=224
c=b+121
224=b+121
b=224-121=123
a+b=675
a+123=675
a=675-123=552
a+b=675
c=b+121
a+b+c=899
675+c=899
c=899-675=224
c=b+121
224=b+121
b=224-121=123
a+b=675
a+123=675
a=675-123=552