16
punti
Livello 0
$(2-\frac{9}{28}:\frac{3}{7})/x=(\frac{3}{2}+\frac{7}{4}-\frac{5}{2})/(3-\frac{3}{5})$
$(2-\frac{9}{28}*\frac{7}{3})/x=(\frac{6+7-10}{4})/(\frac{15-3}{5})$
$(2-\frac{3}{4})/x=(\frac{3}{4})/(\frac{12}{5})$
$(\frac{8-3}{4})/x=(\frac{3}{4})/(\frac{12}{5})$
$(\frac{5}{4})/x=(\frac{3}{4})/(\frac{12}{5})$
$x=\frac{\frac{5}{4}*\frac{12}{5}}{\frac{3}{4}}$
$x=\frac{3}{\frac{3}{4}}=4$
5177
punti
Livello 6