Question

va rog e urgent,dau test!!!!!​

Answer 1

Este foarte simplu

$( - \frac{3}{7} )^{5} \times ( - \frac{3}{7} )^{8} \div ( - \frac{3}{7} )^{12} =$
$= ( - \frac{3}{7} )^{13} \div ( - \frac{3}{7} )^{12} =$
$= - \frac{3}{7}$
Sper ca te-am ajutat ;)))