1. **State the problem:** Solve the system of equations:
$$\begin{cases} -x - 5z = -5 \\ y - 3x = 0 \\ 13x + 2z = 2 \end{cases}$$
2. **Express $y$ in terms of $x$ from the second equation:**
$$y - 3x = 0 \implies y = 3x$$
3. **Use the first and third equations to solve for $x$ and $z$:**
From the first equation:
$$-x - 5z = -5 \implies -x = -5 + 5z \implies x = 5 - 5z$$
Substitute $x = 5 - 5z$ into the third equation:
$$13x + 2z = 2$$
$$13(5 - 5z) + 2z = 2$$
$$65 - 65z + 2z = 2$$
$$65 - 63z = 2$$
4. **Solve for $z$:**
$$-63z = 2 - 65$$
$$-63z = -63$$
$$z = \frac{-63}{-63} = 1$$
5. **Find $x$ using $z=1$:**
$$x = 5 - 5(1) = 5 - 5 = 0$$
6. **Find $y$ using $x=0$:**
$$y = 3(0) = 0$$
7. **Final solution:**
$$(x, y, z) = (0, 0, 1)$$
This matches option A.
Solve System A7A840
Step-by-step solutions with LaTeX - clean, fast, and student-friendly.