Question

FIE A B C apartine lui d in aceasta ordine astfel incat AB=18cm si 5 BC =3AC.Aflati lungimile segmentelor BC si AC

Answer 1

BC=AC-AB=AC-18cm=>
5×(AC-18)=3×AC
5×AC-90=3×AC
5×AC-3×AC=90
2×AC=90
AC=45 cm
BC=27 cm