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$\color{#FF6800}{ 2 } \dfrac { 1 } { 4 }$

$ $ Multiply the number $ 2 $ to the denominator $ 4 $ , and add to the numerator $ $

$\color{#FF6800}{ \dfrac { 1 + 2 \times 4 } { 4 } }$

$\dfrac { 1 + \color{#FF6800}{ 2 } \color{#FF6800}{ \times } \color{#FF6800}{ 4 } } { 4 }$

$ $ Multiply $ 2 $ and $ 4$

$\dfrac { 1 + \color{#FF6800}{ 8 } } { 4 }$

$\dfrac { \color{#FF6800}{ 1 } \color{#FF6800}{ + } \color{#FF6800}{ 8 } } { 4 }$

$ $ Add $ 1 $ and $ 8$

$\dfrac { \color{#FF6800}{ 9 } } { 4 }$