\[2x + 8 - 4x = 11\]
\[-2x + 8 = 11\]
\[-2x = 11 - 8\]
\[-2x = 3\]
\[x = \frac{3}{-2} = -1.5\]
Ответ: \(x = -1.5\)
\[2x = 9 + 3\]
\[2x = 12\]
\[x = \frac{12}{2} = 6\]
Ответ: \(x = 6\)
\[2 - 2x + 2 = 4x - 8\]
\[4 - 2x = 4x - 8\]
\[4 + 8 = 4x + 2x\]
\[12 = 6x\]
\[x = \frac{12}{6} = 2\]
Ответ: \(x = 2\)
\[3 - y + 10 - 2y = 4y - 8\]
\[13 - 3y = 4y - 8\]
\[13 + 8 = 4y + 3y\]
\[21 = 7y\]
\[y = \frac{21}{7} = 3\]
Ответ: \(y = 3\)
\[8 - 10x + 15 = 13 - 6x\]
\[23 - 10x = 13 - 6x\]
\[23 - 13 = 10x - 6x\]
\[10 = 4x\]
\[x = \frac{10}{4} = 2.5\]
Ответ: \(x = 2.5\)
\[x = \frac{11}{12} + \frac{55}{12}\]
\[x = \frac{11 + 55}{12}\]
\[x = \frac{66}{12}\]
\[x = \frac{11}{2} = 5.5\]
Ответ: \(x = 5.5\)
\[\frac{3x}{3} - \frac{x}{3} = \frac{12}{3}\]
\[\frac{2x}{3} = \frac{12}{3}\]
\[2x = 12\]
\[x = \frac{12}{2} = 6\]
Ответ: \(x = 6\)
\[2x + 2x = -3 + 5\]
\[4x = 2\]
\[x = \frac{2}{4} = 0.5\]
Ответ: \(x = 0.5\)
\[4x + 4 = 9\]
\[4x = 9 - 4\]
\[4x = 5\]
\[x = \frac{5}{4} = 1.25\]
Ответ: \(x = 1.25\)
\[10x - 90 = 7\]
\[10x = 7 + 90\]
\[10x = 97\]
\[x = \frac{97}{10} = 9.7\]
Ответ: \(x = 9.7\)