\[\boxed{\text{1160\ (1160).}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[(3x + b)(x + 3) =\]
\[= 3x^{2} + 5x + 3b\]
\[3x^{2} + 9x + \text{bx} + 3b =\]
\[= 3x^{2} + 5x + 3b\]
\[9x + \text{bx} = 5x\]
\[b = - 4,\ \ тогда:\ \]
\[9x - 4x = 5x\]
\[Ответ:\ b = - 4.\ \]
\[\boxed{\text{1160.\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[8x - 3y = 22\]
\[8x - 3 \cdot 6 = 22\]
\[8x - 18 = 22\]
\[8x = 40\]
\[x = 5\]
\[Ответ:x = 5.\]