1. **State the problem:** Solve the system of linear equations using substitution:
$$4x + 3y = 26$$
$$y = 3x - 13$$
2. **Substitute** the expression for $y$ from the second equation into the first equation:
$$4x + 3(3x - 13) = 26$$
3. **Simplify** the equation:
$$4x + 9x - 39 = 26$$
$$13x - 39 = 26$$
4. **Solve for** $x$:
$$13x = 26 + 39$$
$$13x = 65$$
$$x = \frac{65}{13} = 5$$
5. **Find** $y$ by substituting $x=5$ into $y = 3x - 13$:
$$y = 3(5) - 13 = 15 - 13 = 2$$
6. **Final solution:**
$$x = 5, \quad y = 2$$
This means the two lines intersect at the point $(5, 2)$.
Linear Substitution
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