The associative laws state that when you add or multiply any three real numbers, the grouping (or association) of the numbers does not affect the result.
(a + b) + c = a + (b + c)
Example:
(2 + 3) + 5 = 5 + 5 = 10
2 + (3 + 5) = 2 + 8 = 10
(ab)c = a(bc)
Example:
(5 · 7) · 6 = 35 · 6 = 210
5 · (6 · 7) = 5 · 42 = 210