Given two generic variables, a with value "123" and b with value 456, what would the write line output of a + b be

For this case we have the following variables:
 a = 123
 b = 456
 We have the following expression:
 a + b
 Substituting the values we have:
 123 + 456 = 579
 
 the write line output of a + b would be:
 579

Skew lines(segments) are lines(segments) in 3 dimensions that do not intersect the given segment and are not parallel to it.  ae, bf, eg, and fh are your skew segments.  i hope that : )