Question

Daca a*b-a*c=8/3 si b-c=2,(6), atunci a= ?

Answer 1

$a*b-a*c= \frac{8}{3} \\ a(b-c)= \frac{8}{3} \\ b-c= \frac{24}{9}= \frac{8}{3} \\ a* \frac{8}{3}= \frac{8}{3} \rightarrow a =1$

Answer 2

a*b - a*c = 8/3  ⇒ a(b - c) = 8/3    (1)


b - c = 2,(6)    (2)


Din (1), (2) ⇒ a·2,(6)  =  8/3

2,(6) = 2+ 6/9 =2 + 2/3