Уравнине: 2,3b+6b-3,8b+b=11
2,3в+6в-3,8в+в=11 5,5в=11 в=11:5,5 в=2
2.3b + 6b - 3.8b + b = 11 (2.3 + 6 - 3.8 + 1)b = 11 5.5b = 11 b = 11 : 5.5 b = 2