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Formula
Solve the equation
$7- \dfrac{ a }{ 2 } = 2$
$a = 10$
 Solve a solution to $a$
$\color{#FF6800}{ 7 } \color{#FF6800}{ - } \color{#FF6800}{ \dfrac { a } { 2 } } = \color{#FF6800}{ 2 }$
 Multiply both sides by the least common multiple for the denominators to eliminate the fraction 
$\color{#FF6800}{ 14 } \color{#FF6800}{ - } \color{#FF6800}{ a } = \color{#FF6800}{ 4 }$
$\color{#FF6800}{ 14 } - a = 4$
 Move the constant to the right side and change the sign 
$- a = 4 \color{#FF6800}{ - } \color{#FF6800}{ 14 }$
$- a = \color{#FF6800}{ 4 } \color{#FF6800}{ - } \color{#FF6800}{ 14 }$
 Subtract $14$ from $4$
$- a = \color{#FF6800}{ - } \color{#FF6800}{ 10 }$
$\color{#FF6800}{ - } \color{#FF6800}{ a } = \color{#FF6800}{ - } \color{#FF6800}{ 10 }$
 Change the sign of both sides of the equation 
$\color{#FF6800}{ a } = \color{#FF6800}{ - } \left ( \color{#FF6800}{ - } \color{#FF6800}{ 10 } \right )$
$a = \color{#FF6800}{ - } \left ( \color{#FF6800}{ - } 10 \right )$
 Simplify Minus 
$a = 10$
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