Răspunsuri

2014-10-05T23:10:52+03:00
B = 53 - 31 + 13
B = 35
93 - A + 11 = 73
- A = 73 - 11 - 93
- A = - 31
A = 31
56 - 12 - B = 16
- B = 16 - 56 + 12
- B = - 28
B = 28