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Formula
Find the difference
$\dfrac{ 13 }{ 5 } - \dfrac{ 1 }{ 2 }$
$\dfrac { 21 } { 10 }$
Find the difference
$\dfrac { 13 } { \color{#FF6800}{ 5 } } - \dfrac { 1 } { \color{#FF6800}{ 2 } }$
 The smallest common multiple in denominator is $10$
$\dfrac { 13 } { \color{#FF6800}{ 5 } } - \dfrac { 1 } { \color{#FF6800}{ 2 } }$
$\dfrac { 13 } { 5 } - \dfrac { 1 } { 2 }$
 Multiply the denominator and the numerator so that the denominator is the smallest common multiple 
$\dfrac { 13 \times \color{#FF6800}{ 2 } } { 5 \times \color{#FF6800}{ 2 } } - \dfrac { 1 \times \color{#FF6800}{ 5 } } { 2 \times \color{#FF6800}{ 5 } }$
$\color{#FF6800}{ \dfrac { 13 \times 2 } { 5 \times 2 } } \color{#FF6800}{ - } \color{#FF6800}{ \dfrac { 1 \times 5 } { 2 \times 5 } }$
 Organize the expression 
$\color{#FF6800}{ \dfrac { 26 } { 10 } } \color{#FF6800}{ - } \color{#FF6800}{ \dfrac { 5 } { 10 } }$
$\color{#FF6800}{ \dfrac { 26 } { 10 } } \color{#FF6800}{ - } \color{#FF6800}{ \dfrac { 5 } { 10 } }$
 Since the denominator is the same as $10$ , combine the fractions into one 
$\color{#FF6800}{ \dfrac { 26 - 5 } { 10 } }$
$\dfrac { \color{#FF6800}{ 26 } \color{#FF6800}{ - } \color{#FF6800}{ 5 } } { 10 }$
 Subtract $5$ from $26$
$\dfrac { \color{#FF6800}{ 21 } } { 10 }$
Solution search results