Systems of equations:

Systems of equations:

1. a) \(\begin{cases} \frac{1}{3}x - \frac{1}{12}y = 4 \\ 6x + 5y = 150 \end{cases}\)
2. б) \(\begin{cases} \frac{1}{8}v - \frac{1}{3}u = 1 \\ 7u + 9v = -2 \end{cases}\)
3. B) \(\begin{cases} \frac{x}{4} + \frac{y}{6} = 1 \\ 2x + 3y = -12 \end{cases}\)
4. г) \(\begin{cases} \frac{a}{5} - \frac{b}{3} = 1 \\ 4a - 5b = 0 \end{cases}\)