CPM Homework Help : CCAA8 Problem 10-11

Solve the systems of equations below using any method.

$\begin{aligned}[t] 3x &- 3 = y \\ 6x &- 5y = 12 \end{aligned}$
Hint (a):
Since the first equation is already solved for $y$ try using substitution.
Answer (a):
$\left(\frac{1}{3},-2\right)$

$\begin{aligned}[t] 3x &- 2y = 30 \\ 2x &+ 3y = -19 \end{aligned}$
Hint (b):
Are there different numbers that you could multiply the top and bottom equations by that would eliminate a term?