Fundamental Law of Fractions
Fundamental Law of Fractions
The fundamental law of fractions states that the value of a fraction does not change when its numerator and denominator are both multiplied by the same non-zero number. It can be applied to add or subtract two fractions and . Multiply the first by and the second by . Then the fractions have a common denominator (not necessarily the lowest!) and the new numerators can be added: +=
a
b
c
d
d
d
b
b
bd
ad
bd
bc
bd
ad+bc
bd