Let x = one of the numbers and y = the other:
y = 5x [One number is 5 times another number]
y - x = 636 [The difference between the two numbers is 636]
Substitute 5x in place of y in the second equation:
y - x = 636
5x - x = 636 [Substituted 5x in place of y]
4x = 636
Solve for x. Once you have x, y = 5x.
Damazo T.
09/28/14