Question

calcula x+a 2(x-1)=10 a-2y=4 a+y=10

Answer 1

RESOLUCIÓN:

$2(x - 1) = 10 \\ 2x - 2 = 10 \\ 2x = 10 + 2 \\ 2x = 12 \\ x = \frac{12}{2} \\ x = 6$

$a - 2y = 4 \\ a = 4 + 2y$

$a + y = 10 \\ 4 + 2y + y = 10 \\ 4 + 3y = 10 \\ 3y = 10 - 4 \\ 3y = 6 \\ y = \frac{6}{3} \\ y = 2$

$a = 4 + 2y \\ a = 4 + 2(2) \\ a = 4 + 4 \\ a = 8$

RESPUESTA:

$x + a = 6 + 8 = 14$