Real Numbers Algebra

Commutative Law for Addition

Commutative Law for Addition can be expressed as

a + b = b + a         (1)

Associative Law for Addition

Associative Law for Addition can be expressed as

(a + b) + c = a + (b + c)         (2)

Identity Law for Addition

Identity Law for Addition can be expressed as

a + 0 = 0 + a         (3)

Inverse Law of Addition

Inverse Law of Addition can be expressed as

a + (-a) = (-a) + a = 0         (4)

Associative Law for Multiplication

Associative Law for Multiplication can be expressed as

a · (b · c) = (a · b) · c         (5)

Inverse Law for Multiplication

Inverse Law for Multiplication can be expressed as

a · (1 / a) = (1 / a) · a = 1, a ≠ 0           (6)

Identity Law for Multiplication

Identity Law for Multiplication can be expressed as

(a) · (1) = (1) · (a)           (7)

Commutative Law for Multiplication

Commutative Law for Multiplication can be expressed as

a · b = b · a         (8)

Distributive Law

Distributive Law can be expressed as

a · (b + c) = a · b + a ·c         (9)

Temperature ^oC
K
^oF

Length m
km
in
ft
yards
miles
naut miles

Area m²
km²
in²
ft²
miles²
acres

Volume m³
liters
in³
ft³
us gal

Weight kg_f
N
lbf

Velocity m/s
km/h
ft/min
ft/s
mph
knots

Pressure Pa
bar
mm H₂O
kg/cm²
psi
inches H₂O

Flow m³/s
m³/h
US gpm
cfm