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Formula
Calculate the value
$\dfrac{ 4 }{ 9 } \times \dfrac{ 5 }{ 8 } \times \dfrac{ 6 }{ 7 }$
$\dfrac { 5 } { 21 }$
Calculate the value
$\dfrac { \color{#FF6800}{ 4 } } { \color{#FF6800}{ 9 } } \times \dfrac { 5 } { \color{#FF6800}{ 8 } } \times \dfrac { \color{#FF6800}{ 6 } } { 7 }$
 Reduce all denominators and numerators that can be reduced 
$\dfrac { \color{#FF6800}{ 1 } } { \color{#FF6800}{ 3 } } \times \dfrac { 5 } { \color{#FF6800}{ 1 } } \times \dfrac { \color{#FF6800}{ 1 } } { 7 }$
$\color{#FF6800}{ \dfrac { 1 } { 3 } } \color{#FF6800}{ \times } \color{#FF6800}{ \dfrac { 5 } { 1 } } \color{#FF6800}{ \times } \color{#FF6800}{ \dfrac { 1 } { 7 } }$
 numerator multiply between numerator, and denominators multiply between denominators 
$\color{#FF6800}{ \dfrac { 1 \times 5 \times 1 } { 3 \times 1 \times 7 } }$
$\dfrac { \color{#FF6800}{ 1 } \times 5 \color{#FF6800}{ \times } \color{#FF6800}{ 1 } } { 3 \times 1 \times 7 }$
 Multiplying any number by 1 does not change the value 
$\dfrac { 5 } { 3 \times 1 \times 7 }$
$\dfrac { 5 } { 3 \color{#FF6800}{ \times } \color{#FF6800}{ 1 } \times 7 }$
 Multiplying any number by 1 does not change the value 
$\dfrac { 5 } { 3 \times 7 }$
$\dfrac { 5 } { \color{#FF6800}{ 3 } \color{#FF6800}{ \times } \color{#FF6800}{ 7 } }$
 Multiply $3$ and $7$
$\dfrac { 5 } { \color{#FF6800}{ 21 } }$
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