Question

1 supra 2 -1 supra 8 ×2⁴
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Answer 1

Salutare!

$\bf \dfrac{1}{2} -\dfrac{1}{8}\cdot 2^{4} =$

$\bf \dfrac{1}{2} -\dfrac{1}{2^{3}}\cdot 2^{4} =$

$\bf \dfrac{1}{2} -\dfrac{1}{\not2^{3}}\cdot \not2^{4} =$

$\bf \dfrac{1}{2} -\dfrac{1}{1}\cdot 2^{1} =$

$\bf \dfrac{1}{2} - 2 =$

$\bf \dfrac{1}{2} - \dfrac{2}{1} =$

$\bf \dfrac{1}{2} -\dfrac{2\cdot2}{2} =$

$\bf \dfrac{1-4}{2} =$

$\boxed{\bf -\dfrac{3}{2} }$