Question

Determine el conjunto solucion de |-7-3|=
a)-10. b)10. c)-21. d)21

Answer 1

|x| , × mayor o igual que cero
|-7-3|= |-10| => 10

Answer 2

|-7-3| = 10, |a| = a, |-a| = a, |-7-3| = |-10| === |-a| = a == |-10| = 10.