Question

ajutati-ma >.................................................. exercitile 6 si 7

Answer 1

5.$\frac{462}{89x} se.simplifica.cu.2.daca.si.numai.daca.x=(0,2,4,6,8)$
$fractiile. sunt.: \frac{462}{890} ; \frac{462}{892}; \frac{462}{894} ; \frac{462}{896} ; \frac{452}{898} =>5.fractii$

6.$\frac{57}{31}- \frac{16}{31} = \frac{x-21}{31}=> \frac{41}{31}= \frac{x-21}{31}=>x-21= \frac{41*31}{31}=>x-21=41 \\ =>x=41+21=>x=62$

7.  $\frac{x+3}{7} \leq \frac{5}{7}=>(numitorii. aceeasi.deci.ii.eliminam.)x+3 \leq 5=>x \leq 2$
x={0,1,2}