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Formula
Find the difference
$4 \dfrac{ 3 }{ 8 } -2 \dfrac{ 11 }{ 16 }$
$\dfrac { 27 } { 16 }$
Find the difference
$\color{#FF6800}{ 4 \dfrac { 3 } { 8 } } - 2 \dfrac { 11 } { 16 }$
 Convert mixed number into improper fraction 
$\color{#FF6800}{ \dfrac { 35 } { 8 } } - 2 \dfrac { 11 } { 16 }$
$\dfrac { 35 } { 8 } \color{#FF6800}{ - } \color{#FF6800}{ 2 \dfrac { 11 } { 16 } }$
 Convert mixed number into improper fraction 
$\dfrac { 35 } { 8 } \color{#FF6800}{ - } \color{#FF6800}{ \dfrac { 43 } { 16 } }$
$\dfrac { 35 } { \color{#FF6800}{ 8 } } - \dfrac { 43 } { \color{#FF6800}{ 16 } }$
 The smallest common multiple in denominator is $16$
$\dfrac { 35 } { \color{#FF6800}{ 8 } } - \dfrac { 43 } { \color{#FF6800}{ 16 } }$
$\dfrac { 35 } { 8 } - \dfrac { 43 } { 16 }$
 Multiply the denominator and the numerator so that the denominator is the smallest common multiple 
$\dfrac { 35 \times \color{#FF6800}{ 2 } } { 8 \times \color{#FF6800}{ 2 } } - \dfrac { 43 } { 16 }$
$\color{#FF6800}{ \dfrac { 35 \times 2 } { 8 \times 2 } } \color{#FF6800}{ - } \color{#FF6800}{ \dfrac { 43 } { 16 } }$
 Organize the expression 
$\color{#FF6800}{ \dfrac { 70 } { 16 } } \color{#FF6800}{ - } \color{#FF6800}{ \dfrac { 43 } { 16 } }$
$\color{#FF6800}{ \dfrac { 70 } { 16 } } \color{#FF6800}{ - } \color{#FF6800}{ \dfrac { 43 } { 16 } }$
 Since the denominator is the same as $16$ , combine the fractions into one 
$\color{#FF6800}{ \dfrac { 70 - 43 } { 16 } }$
$\dfrac { \color{#FF6800}{ 70 } \color{#FF6800}{ - } \color{#FF6800}{ 43 } } { 16 }$
 Subtract $43$ from $70$
$\dfrac { \color{#FF6800}{ 27 } } { 16 }$
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