Question

Rezolvati,in multimea numerelor intregi,ecuatia (3 -2 supra 3 ) inmultit cu 9 supra 7 - 10 supra 5= x supra 5

Answer 1

$3- \frac{2}{3}* \frac{9}{7}- \frac{10}{5}= \frac{x}{5}$

$3- \frac{2}{1}* \frac{3}{7}-2= \frac{x}{5}$

$1- \frac{6}{7}= \frac{x}{5}$

$\frac{7}{7} - \frac{6}{7}= \frac{x}{5}$

$\frac{1}{7}= \frac{x}{5}$

$x= \frac{5}{7}$

5/7 nu este numar intreg, ceea ce inseamna ca ecuatia nu are solutii in multimea numerelor intregi