Question

What is the solution to the system of linear equations? 2x + y = 7 x - 2y = 16

Answer 1

Answer:

Step-by-step explanation:

1. Reform the first equation: y = 7 - 2x; y = -2x + 7
2. Reform the second equation: -2y = -x + 16; y = 0.5x + 8
3. Equate: -2x + 7 = 0.5x + 8; -4x + 14 = x + 16; -3x + 14 = 16; -3x = 2; x = -$\frac{2}{3}$
4. Calculate y: y = -2 * - 2/3 + 7 = 4/3 + 7; y = $\frac{25}{3}$
5. Define S($-\frac{2}{3} ; \frac{25}{3}$)