Category:Definitions/Common Denominators
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This category contains definitions related to Common Denominators.
Related results can be found in Category:Common Denominators.
Consider the expression:
- $\dfrac a b + \dfrac c d$
where $a$, $b$, $c$ and $d$ are any expressions whatsoever which evaluate to a number such that neither $c$ nor $d$ evaluate to zero.
In order to be able to perform the required addition, it is necessary to put the expressions $\dfrac a b$ and $\dfrac c d$ over a common denominator.
Hence the operation is:
- to multiply both the numerator (top) and denominator (bottom) of $\dfrac a b$ by $d$
and in the same operation:
- to multiply both the numerator (top) and denominator (bottom) of $\dfrac c d$ by $b$
in order to obtain the expression:
- $\dfrac {a d} {b d} + \dfrac {b c} {b d}$
Hence one may perform the operation as:
- $\dfrac {a d + b c} {b d}$
and either evaluate or simplify appropriately.
Subcategories
This category has only the following subcategory.
Pages in category "Definitions/Common Denominators"
The following 3 pages are in this category, out of 3 total.