Respuesta :
a) no tiene incógnita
B)2x + |7x| = 78
9X= 78
X= 78/9
C) |x+2| = 1
X= 1-2
X= -1
D) x-1| = 3
X= 3+ 1
X= 4
E) |2x-4| = 5
2X= 5+4
X= 9/2
B)2x + |7x| = 78
9X= 78
X= 78/9
C) |x+2| = 1
X= 1-2
X= -1
D) x-1| = 3
X= 3+ 1
X= 4
E) |2x-4| = 5
2X= 5+4
X= 9/2