Algebraic Laws Used in This Book

Additive Identity	n + 0 = 0 + n = n
Multiplicative Identity	n1 = 1n = n

Additive Inverse

a b = a + (b)

Commutative Law of Addition	a + b = b + a
Commutative Law of Multiplication	ab = ba

Distributive

a(b+c) = ab+ac

(b+c)/a = b/a + c/a