Question

si x + 3 = 8 2x menos 10 = 2 entonces calcula el valor de x + y

Answer 1

Respuesta:

$x + 3y = 8 \\ 2x - y = 2 \\ \frac{8 - x}{3} = 2x - 2 \\ 8 - x = 6x - 6 \\ 14 = 7x \\ 2 = x \\ 2 + 3y = 8 \\ 3y = 6 \\ y = 2 \\ (x + y) = 4$

$x + 3 = 8 \\x = 5 \\ 2x - 10 = 2 \\ 2x = 12 \\ x = 6$