Question

4\5 - 2\7: 7\13 -2\5-(6\2x1\3-4\5:5\4)

Answer 1

RĂSPUNS:

4/5-2/7:7/13-2/5-(6/2×1/3-4/5:5/4

4/5-2/7×13/7-2/5-(3×1/3-4/5×4/5)

4/5-26/49-2/5-(1-16/25)

4/5-26/49-2/5-9/25

= - 601/-1225

Answer 2

Răspuns:

$\frac{4}{5} - \frac{2}{7} \div \frac{7}{13} - \frac{2}{5} - (\frac{6}{2} \times \frac{1}{3} - \frac{4}{5} \div \frac{5}{4} ) = \\ = \frac{4}{5} - \frac{2}{7} \times \frac{13}{7 } - \frac{2}{5} - ( \frac{2}{1} \times 1 - \frac{4}{5} \times \frac{5}{4} ) = \\ = \frac{4}{5 } - \frac{2}{5} - \frac{2 \times 13}{7 \times 7} - ( \frac{2}{1} - \frac{1}{1}) = \\ = \frac{2}{5} - \frac{26}{49} - (2 - 1) = \\ = \frac{98 - 130}{245} - 1 = \\ = \frac{32}{245} - 1 = \\ = \frac{32 - 245}{245} = - \frac{213}{245}$

Explicație pas cu pas:

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