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Formula
Calculate the value
$\dfrac{ 3 }{ \sqrt{ 5 } } - \sqrt{ 5 }$
$- \dfrac { 2 \sqrt{ 5 } } { 5 }$
Calculate the value
$\color{#FF6800}{ \dfrac { 3 } { \sqrt{ 5 } } } - \sqrt{ 5 }$
 Calculate the expression 
$\color{#FF6800}{ \dfrac { 3 \sqrt{ 5 } } { 5 } } - \sqrt{ 5 }$
$\dfrac { 3 \sqrt{ 5 } } { 5 } \color{#FF6800}{ - } \sqrt{ \color{#FF6800}{ 5 } }$
 Convert an equation to a fraction using $a=\dfrac{a}{1}$
$\dfrac { 3 \sqrt{ 5 } } { 5 } + \color{#FF6800}{ \dfrac { - \sqrt{ 5 } } { 1 } }$
$\color{#FF6800}{ \dfrac { 3 \sqrt{ 5 } } { 5 } } \color{#FF6800}{ + } \color{#FF6800}{ \dfrac { - \sqrt{ 5 } } { 1 } }$
 Write all numerators above the least common denominator 
$\color{#FF6800}{ \dfrac { 3 \sqrt{ 5 } - 5 \sqrt{ 5 } } { 5 } }$
$\dfrac { \color{#FF6800}{ 3 } \sqrt{ \color{#FF6800}{ 5 } } \color{#FF6800}{ - } \color{#FF6800}{ 5 } \sqrt{ \color{#FF6800}{ 5 } } } { 5 }$
 Calculate between similar terms 
$\dfrac { \color{#FF6800}{ - } \color{#FF6800}{ 2 } \sqrt{ \color{#FF6800}{ 5 } } } { 5 }$
$\color{#FF6800}{ \dfrac { - 2 \sqrt{ 5 } } { 5 } }$
 Move the minus sign to the front of the fraction 
$\color{#FF6800}{ - } \color{#FF6800}{ \dfrac { 2 \sqrt{ 5 } } { 5 } }$
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