# Calculator search results

Formula
Calculate the value
$\left( + \dfrac{ 1 }{ 5 } \right) \times \left( + \dfrac{ 3 }{ 7 } \right) \times \left( - \dfrac{ 5 }{ 9 } \right)$
$- \dfrac { 1 } { 21 }$
Calculate the value
$\dfrac { 1 } { 5 } \times \dfrac { 3 } { 7 } \times \left ( \color{#FF6800}{ - } \dfrac { 5 } { 9 } \right )$
 If you multiply negative numbers by odd numbers, move the (-) sign forward 
$\color{#FF6800}{ - } \left ( \dfrac { 1 } { 5 } \times \dfrac { 3 } { 7 } \times \dfrac { 5 } { 9 } \right )$
$- \left ( \dfrac { 1 } { \color{#FF6800}{ 5 } } \times \dfrac { \color{#FF6800}{ 3 } } { 7 } \times \dfrac { \color{#FF6800}{ 5 } } { \color{#FF6800}{ 9 } } \right )$
 Reduce all denominators and numerators that can be reduced 
$- \left ( \dfrac { 1 } { \color{#FF6800}{ 1 } } \times \dfrac { \color{#FF6800}{ 1 } } { 7 } \times \dfrac { \color{#FF6800}{ 1 } } { \color{#FF6800}{ 3 } } \right )$
$- \left ( \color{#FF6800}{ \dfrac { 1 } { 1 } } \color{#FF6800}{ \times } \color{#FF6800}{ \dfrac { 1 } { 7 } } \color{#FF6800}{ \times } \color{#FF6800}{ \dfrac { 1 } { 3 } } \right )$
 numerator multiply between numerator, and denominators multiply between denominators 
$- \color{#FF6800}{ \dfrac { 1 \times 1 \times 1 } { 1 \times 7 \times 3 } }$
$- \dfrac { \color{#FF6800}{ 1 } \color{#FF6800}{ \times } \color{#FF6800}{ 1 } \color{#FF6800}{ \times } \color{#FF6800}{ 1 } } { 1 \times 7 \times 3 }$
 Multiplying any number by 1 does not change the value 
$- \dfrac { 1 } { 1 \times 7 \times 3 }$
$- \dfrac { 1 } { \color{#FF6800}{ 1 } \times 7 \times 3 }$
 Multiplying any number by 1 does not change the value 
$- \dfrac { 1 } { 7 \times 3 }$
$- \dfrac { 1 } { \color{#FF6800}{ 7 } \color{#FF6800}{ \times } \color{#FF6800}{ 3 } }$
 Multiply $7$ and $3$
$- \dfrac { 1 } { \color{#FF6800}{ 21 } }$
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