1. **State the problem:** Solve the system of linear equations:
$$5 \cdot 26 = 2x + 5y$$
$$8 = 5x + 3y$$
2. **Rewrite the first equation:**
Calculate $5 \cdot 26$ first:
$$130 = 2x + 5y$$
3. **Express one variable from the second equation:**
From
$$8 = 5x + 3y$$
solve for $x$:
$$5x = 8 - 3y$$
$$x = \frac{8 - 3y}{5}$$
4. **Substitute $x$ into the first equation:**
$$130 = 2\left(\frac{8 - 3y}{5}\right) + 5y$$
5. **Multiply both sides by 5 to clear the denominator:**
$$5 \cdot 130 = 5 \cdot \left(2 \cdot \frac{8 - 3y}{5} + 5y\right)$$
$$650 = 2(8 - 3y) + 25y$$
6. **Expand and simplify:**
$$650 = 16 - 6y + 25y$$
$$650 = 16 + 19y$$
7. **Isolate $y$:**
$$650 - 16 = 19y$$
$$634 = 19y$$
8. **Divide both sides by 19:**
$$y = \frac{634}{19}$$
Show cancellation:
$$y = \frac{\cancel{634}}{\cancel{19}}$$
Calculate:
$$y = 33.3684$$
9. **Substitute $y$ back to find $x$:**
$$x = \frac{8 - 3(33.3684)}{5}$$
$$x = \frac{8 - 100.1052}{5}$$
$$x = \frac{-92.1052}{5}$$
$$x = -18.4210$$
**Final answer:**
$$x \approx -18.4210, \quad y \approx 33.3684$$
Solve Linear System 46B400
Step-by-step solutions with LaTeX - clean, fast, and student-friendly.