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Solve the equation
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$a = - 2$
$ $ Solve a solution to $ a$
$\color{#FF6800}{ a } \color{#FF6800}{ \times } \left ( \color{#FF6800}{ - } \color{#FF6800}{ 2 } \right ) = 4$
$ $ Simplify the expression $ $
$\color{#FF6800}{ - } \color{#FF6800}{ 2 } \color{#FF6800}{ a } = 4$
$\color{#FF6800}{ - } \color{#FF6800}{ 2 } \color{#FF6800}{ a } = \color{#FF6800}{ 4 }$
$ $ Change the sign of both sides of the equation $ $
$2 a = - 4$
$\color{#FF6800}{ 2 } \color{#FF6800}{ a } = \color{#FF6800}{ - } \color{#FF6800}{ 4 }$
$ $ Divide both sides by the same number $ $
$\color{#FF6800}{ a } = \color{#FF6800}{ - } \color{#FF6800}{ 2 }$
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