Question

x= 4+dois terços -1 + tres quintos

Answer 1

Olá

x= 4+2/3 -1 + 3/5   mmc de 3,1,5=15
 x= 4.15+ 5.2 +15.-1+ 3.3/15
  x=60+10-15+9/15
  x= 60+10+9-15/15=
  x=70-6/15
  x=64/15