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Formula
Calculate the value
Answer
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$4 \times 4-1 =$
$15$
Calculate the value
$\color{#FF6800}{ 4 } \color{#FF6800}{ \times } \color{#FF6800}{ 4 } - 1$
$ $ Multiply $ 4 $ and $ 4$
$\color{#FF6800}{ 16 } - 1$
$\color{#FF6800}{ 16 } \color{#FF6800}{ - } \color{#FF6800}{ 1 }$
$ $ Subtract $ 1 $ from $ 16$
$\color{#FF6800}{ 15 }$
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