Question

(0,3-3 supra 20) * (1+1 supra 2) = b

Answer 1

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Answer 2

Răspuns:

Explicație pas cu pas:

$(0.3 - \frac{3}{20} ) \times ( {}^{2)} 1 + \frac{1}{2} ) = b \leftrightarrow \: ( \frac{ {}^{2)} 3}{10} - \frac{3}{20} ) \times ( \frac{2}{2} + \frac{1}{2} ) = b$

$( \frac{6}{20} - \frac{3}{20} ) \times \frac{3}{2} = b \leftrightarrow \: \frac{3}{20} \times \frac{3}{2} = b \rightarrow \: \boxed{b = \frac{9}{40} }$