Given that the distance between the point M representing the number a and the point n representing the number - 1 on the number axis is 3, and the distance between the point n representing the number B and the point n representing the number 2 is 4, find the distance between the two points m and n

Given that the distance between the point M representing the number a and the point n representing the number - 1 on the number axis is 3, and the distance between the point n representing the number B and the point n representing the number 2 is 4, find the distance between the two points m and n

According to the meaning of the question: a = - 4 or 2, B = - 2 or 6, when a = - 4, B = - 2, Mn = 2; when a = - 4, B = 6, Mn = 10; when a = 2, B = - 2, Mn = 4; when a = 2, B = 6, Mn = 8