Question

rezolvați ecuația 0,(2) x - 1 supra 5 = 2 intregi 1 supra 3​

Answer 1

Răspuns: 11 intregi 12/30

$\displaystyle \frac{2}{9}\ x \ - \ \frac{1}{5} \ = \ \frac{2 \ \cdot \ 3 \ + \ 1}{3}\\\\ \frac{2}{9}\ x \ - \ \frac{1}{5} \ = \ \frac{7 }{3}\\\\ \frac{2}{9}\ x \ = \ \frac{7 }{3} \ + \ \frac{1}{5}\\\\ \frac{2}{9}\ x \ = \ \frac{7 \ \cdot \ 5 \ + \ 3 }{15} \\\\\frac{2}{9}\ x \ = \ \frac{38}{15}$

$\displaystyle \ x \ = \ \frac{38}{15} \ : \frac{2}{9} \\\\\ x \ = \ \frac{38}{15} \ \cdot \ \frac{9}{2} \\\\\\x \ = \ \frac{342}{30} \\\\x \ = \ 11\frac{12}{30}$