Question

Calculați scoțând factor comun:
$\frac{2}{23}. \frac{3}{5} - \frac{2}{5} . \frac{3}{46}$

Answer 1

Sper sa intelegi!
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Answer 2

$\frac{2}{23} \times \frac{3}{5} - \frac{2}{5} \times \frac{3}{46}$

$= \frac{2}{5} ( \frac{3}{23} - \frac{3}{46} )$

$=\frac{2}{5} ( \frac{6}{46} - \frac{3}{46} )$

$=\frac{2}{5} \times \frac{3}{46}$

$= \frac{6}{230}$

$= \frac{3}{115}$