Question

"Ecuaciones con módulo": |x+1| + |x| =3

Answer 1

Explicación paso a paso:

$|x + 1| + |x| = 3 \\ x + 1 + x = 3 \\ 2x = 3 - 1 \\ 2x = 2 \\ x = 1$

$|x + 1| + |x| = - 3 \\ x + 1 + x = - 3 \\ 2x = - 3 - 1 \\ 2x = - 4 \\ x = - 2$