Question

cum se rezolva ex [(x:7-1):4x12-3x5]:9+11=16

Answer 1

[(x:7-1):4x12-3x5]:9+11=16
[(x:7-1):4x12-15]:9=16-11
[(x:7-1):4x12-15]:9=5
[(x:7-1):4x12-15]=5x9
[(x:7-1):4x12-15]=45
(x:7-1):4x12=45+15
(x:7-1):4x12=60
(x:7-1):4=60:12
(x:7-1):4=5
(x:7-1)=5x4
x:7-1=20
x:7=20+1
x:7=21
x=21x7
x=147