Утвердите выражения: х-(2х-(4х+3)) ; 8m-(4n-(6m+(3n+5m)))

х-(2х-(4х+3)) =х-2х+4х+3=3х+3

8m-(4n-(6m+(3n+5m)))=

8м-4н+6м+3н+5м=19м-н

x-(2x-(4x+3))= x-(2x-4x-3)=x-2x+4x+3=3x+3

2)

8m-(4n-(11m+3n))=8m-(4n-11m-3n)=8m-(n-11m)=8m-n+11m=19m-n