1. **State the problem:** Solve the system of linear equations for $x$, $y$, and $z$:
$$\begin{cases}-3x + 2y - 3z = 4 \\ x + 2y + 3z = 1 \\ 2x + 4y + 6z = 2 \end{cases}$$
2. **Analyze the system:** Notice the third equation is exactly twice the second equation:
$$2(x + 2y + 3z) = 2 \Rightarrow 2x + 4y + 6z = 2$$
This means the third equation is not independent and the system has either infinitely many solutions or no solution.
3. **Use the first two equations to solve for $x$ and $y$ in terms of $z$:**
From the second equation:
$$x + 2y + 3z = 1 \Rightarrow x = 1 - 2y - 3z$$
Substitute $x$ into the first equation:
$$-3(1 - 2y - 3z) + 2y - 3z = 4$$
4. **Simplify the substitution:**
$$-3 + 6y + 9z + 2y - 3z = 4$$
Combine like terms:
$$8y + 6z - 3 = 4$$
Add 3 to both sides:
$$8y + 6z = 7$$
5. **Solve for $y$ in terms of $z$:**
$$8y = 7 - 6z \Rightarrow y = \frac{7 - 6z}{8}$$
6. **Substitute $y$ back into the expression for $x$:**
$$x = 1 - 2\left(\frac{7 - 6z}{8}\right) - 3z = 1 - \frac{2(7 - 6z)}{8} - 3z$$
Simplify the fraction:
$$x = 1 - \frac{7 - 6z}{4} - 3z$$
7. **Simplify $x$ further:**
$$x = 1 - \frac{7}{4} + \frac{6z}{4} - 3z = 1 - \frac{7}{4} + \frac{3z}{2} - 3z$$
Combine constants:
$$1 - \frac{7}{4} = \frac{4}{4} - \frac{7}{4} = -\frac{3}{4}$$
Combine $z$ terms:
$$\frac{3z}{2} - 3z = \frac{3z}{2} - \frac{6z}{2} = -\frac{3z}{2}$$
So:
$$x = -\frac{3}{4} - \frac{3z}{2}$$
8. **Write the solution as an ordered triple:**
$$\boxed{\left(-\frac{3}{4} - \frac{3}{2}z, \frac{7}{8} - \frac{3}{4}z, z\right)}$$
This represents infinitely many solutions parameterized by $z$.
Linear System 3Vars 0F80Ba
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