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Find the sum or difference of the fractions
$- \dfrac{ 1 }{ 3 } - \dfrac{ 2 }{ 3 }$
$- 1$
Find the sum or difference of the fractions
$\color{#FF6800}{ - } \color{#FF6800}{ \dfrac { 1 } { 3 } } \color{#FF6800}{ - } \color{#FF6800}{ \dfrac { 2 } { 3 } }$
 Since the denominator is the same as $3$ , combine the fractions into one 
$\color{#FF6800}{ \dfrac { - 1 - 2 } { 3 } }$
$\dfrac { \color{#FF6800}{ - } \color{#FF6800}{ 1 } \color{#FF6800}{ - } \color{#FF6800}{ 2 } } { 3 }$
 Find the sum of the negative numbers 
$\dfrac { \color{#FF6800}{ - } \color{#FF6800}{ 3 } } { 3 }$
$\dfrac { \color{#FF6800}{ - } \color{#FF6800}{ 3 } } { 3 }$
 Move the minus sign to the front of the fraction 
$\color{#FF6800}{ - } \color{#FF6800}{ \dfrac { 3 } { 3 } }$
$\color{#FF6800}{ - } \color{#FF6800}{ \dfrac { 3 } { 3 } }$
 Reduce the fraction to the lowest term 
$\color{#FF6800}{ - } \color{#FF6800}{ 1 }$
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