Buna,
☆ Sa notam ❛a❜ suma pe care trebuie sa a gasim, deci cea pe care o avea la inceput.
☆Dupa aia, trebuie sa punem problema sub forma unei ecuatii, deci
[tex]a-\frac{1}{4} -(\frac{1}{4}*\frac{1}{3} + 15) = 85\\\\a-\frac{1}{4} -\frac{1}{4}*\frac{1}{3} - 15 = 85\\\\a= 85+15+\frac{1}{4} +\frac{1}{4}*\frac{1}{3}\\\\a= 100+\frac{1}{4} +\frac{1}{4*3}\\a= 100+\frac{1}{4} +\frac{1}{12}\\a= 100+\frac{1*3}{4*3}+\frac{1}{12}\\\\a=100+\frac{3}{12}+\frac{1}{12}\\\\a=100+\frac{3+1}{12}\\a=100+\frac{4}{12}\\a=100+\frac{4}{12}[/tex]
a = 100+0.(3) RON
꧁꧂
Sper ca ai inteles si ca te-am ajutat ! ❀
