Denise G. answered 09/12/19
Algebra, College Algebra, Prealgebra, Precalculus, GED, ASVAB Tutor
Sometimes when you have a negative and positive number on the number line, it is easier to look at in in 2 pieces.
The distance from -7 to 0 on the number line is 7
The distance from 12 to 0 on the number line is 12
7+12 = 19 units total between them