1. **State the problem:** Solve the system of linear equations:
$$4x + 5y = 14$$
$$2x + 5y = 2$$
2. **Formula and method:** We will use the elimination method to solve for $x$ and $y$. The goal is to eliminate one variable by subtracting the equations.
3. **Subtract the second equation from the first:**
$$\begin{aligned}
(4x + 5y) - (2x + 5y) &= 14 - 2 \\
4x + 5y - 2x - 5y &= 12 \\
(4x - 2x) + (5y - 5y) &= 12 \\
2x + \cancel{5y} - \cancel{5y} &= 12 \\
2x &= 12
\end{aligned}$$
4. **Solve for $x$:**
$$x = \frac{12}{2} = 6$$
5. **Substitute $x=6$ into one of the original equations to find $y$:** Using the second equation:
$$2(6) + 5y = 2$$
$$12 + 5y = 2$$
6. **Isolate $y$:**
$$5y = 2 - 12$$
$$5y = -10$$
7. **Solve for $y$:**
$$y = \frac{-10}{5} = -2$$
**Final answer:**
$$x = 6, \quad y = -2$$
Linear Equations A451D6
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