Răspunsuri

2014-01-16T17:18:04+02:00
2014-01-16T17:20:23+02:00
A - b = 10 => a = b + 10
acum inlocuiesti:
b + 10 + b = 100
2b = 90
b = 90 :2
b = 45
a - 45 = 10
a = 10 + 45
a = 55