146. Решите линейное уравнение:

Решение:

а) \(\frac{1}{3}x = 12\)

\(x = 12 \cdot 3\)

\(x = 36\)

б) \(\frac{2}{3}y = 9\)

\(y = 9 \cdot \frac{3}{2}\)

\(y = \frac{27}{2}\)

\(y = 13.5\)

в) \(-4x = \frac{1}{7}\)

\(x = \frac{1}{7} \div (-4)\)

\(x = \frac{1}{7} \cdot \frac{1}{-4}\)

\(x = -\frac{1}{28}\)

г) \(5y = -\frac{5}{8}\)

\(y = -\frac{5}{8} \div 5\)

\(y = -\frac{5}{8} \cdot \frac{1}{5}\)

\(y = -\frac{1}{8}\)

д) \(\frac{1}{6}y = \frac{1}{3}\)

\(y = \frac{1}{3} \cdot 6\)

\(y = 2\)

е) \(\frac{2}{7}x = 0\)

\(x = 0 \cdot \frac{7}{2}\)

\(x = 0\)

ж) \(\frac{11}{7}x = 4\frac{5}{7}\)

\(\frac{11}{7}x = \frac{33}{7}\)

\(x = \frac{33}{7} \cdot \frac{7}{11}\)

\(x = 3\)

3) \(-\frac{17}{13}y = -2\frac{8}{13}\)

\(-\frac{17}{13}y = -\frac{34}{13}\)

\(y = -\frac{34}{13} \cdot \frac{13}{-17}\)

\(y = 2\)

Ответ: а) 36; б) 13.5; в) -1/28; г) -1/8; д) 2; е) 0; ж) 3; з) 2.