Răspuns :
a+b+c=13250
a+b=9850
c=13250-9850
c=3400
a+c=6750
a=6750-3400
a=3350
b=9850-3350
b=6500
a+b=9850
c=13250-9850
c=3400
a+c=6750
a=6750-3400
a=3350
b=9850-3350
b=6500
9850 + c = 13250 c = 13250 - 9850 = 3400
a + 3400 = 6750 a = 6750 - 3400= 3350
3350 + b + 3400 = 13250 b = 13250 - 3350 - 3400 = 6500
a + 3400 = 6750 a = 6750 - 3400= 3350
3350 + b + 3400 = 13250 b = 13250 - 3350 - 3400 = 6500