1. **State the problem:** Solve the system of linear equations using the elimination method:
$$3x + 2y = 8$$
$$4x - y = 22$$
2. **Elimination method formula:** We aim to eliminate one variable by making the coefficients of that variable opposites in both equations, then adding or subtracting the equations.
3. **Step 1: Make coefficients of $y$ opposites.** Multiply the second equation by 2:
$$2 \times (4x - y) = 2 \times 22$$
$$8x - 2y = 44$$
4. **Step 2: Add the first equation and the new equation:**
$$3x + 2y = 8$$
$$8x - 2y = 44$$
\hline
$$(3x + 8x) + (2y - 2y) = 8 + 44$$
$$11x + \cancel{2y - 2y} = 52$$
$$11x = 52$$
5. **Step 3: Solve for $x$:**
$$x = \frac{52}{11}$$
6. **Step 4: Substitute $x$ back into one of the original equations to find $y$.** Use the first equation:
$$3x + 2y = 8$$
$$3 \times \frac{52}{11} + 2y = 8$$
$$\frac{156}{11} + 2y = 8$$
7. **Step 5: Isolate $y$:**
$$2y = 8 - \frac{156}{11}$$
$$2y = \frac{88}{11} - \frac{156}{11}$$
$$2y = -\frac{68}{11}$$
8. **Step 6: Solve for $y$:**
$$y = \frac{-\frac{68}{11}}{2} = -\frac{68}{11} \times \frac{1}{2} = -\frac{68}{22} = -\frac{34}{11}$$
**Final answer:**
$$x = \frac{52}{11}, \quad y = -\frac{34}{11}$$
Elimination Method D9753C
Step-by-step solutions with LaTeX - clean, fast, and student-friendly.