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Formula
Solve the equation
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$y = \dfrac { 2 } { 5 }$
$y = \dfrac { x } { 15 }$
$x$Intercept
$\left ( 0 , 0 \right )$
$y$Intercept
$\left ( 0 , 0 \right )$
$\dfrac{ 2 }{ 5 } = \dfrac{ x }{ 15 }$
$x = 6$
 Solve a solution to $x$
$\color{#FF6800}{ \dfrac { 2 } { 5 } } = \color{#FF6800}{ \dfrac { x } { 15 } }$
 Multiply both sides by the least common multiple for the denominators to eliminate the fraction 
$\color{#FF6800}{ 6 } = \color{#FF6800}{ x }$
$6 = \color{#FF6800}{ x }$
 Move the variable to the left-hand side and change the symbol 
$6 \color{#FF6800}{ - } \color{#FF6800}{ x } = 0$
$\color{#FF6800}{ 6 } - x = 0$
 Move the constant to the right side and change the sign 
$- x = \color{#FF6800}{ - } \color{#FF6800}{ 6 }$
$\color{#FF6800}{ - } \color{#FF6800}{ x } = \color{#FF6800}{ - } \color{#FF6800}{ 6 }$
 Change the sign of both sides of the equation 
$\color{#FF6800}{ x } = \color{#FF6800}{ - } \left ( \color{#FF6800}{ - } \color{#FF6800}{ 6 } \right )$
$x = \color{#FF6800}{ - } \left ( \color{#FF6800}{ - } 6 \right )$
 Simplify Minus 
$x = 6$
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