Explicación paso a paso:
[tex]2x + y = 50 \\ \\ 34x - 5y = 30 \\ \\ y = 50 - 2x \\ \\ 34x - 5(50 - 2x) = 30 \\ 34x - 250 + 10x = 30 \\ 44x - 250 = 30 \\ 44x = 30 + 250 \\ x = \frac{280}{44} \\ x = \frac{70}{11} \\ \\ y = 50 - 2 \times \frac{70}{11} \\ y = 50 - \frac{140}{11} \\ y = \frac{550}{11} - \frac{140}{11} \\ y = \frac{410}{11} \\ \\ (x + y) = ( \frac{70}{11} + \frac{410}{11} ) \\ \frac{70}{11} + \frac{410}{11} = \frac{480}{11} [/tex]
(x + y) = 480/11
