Question

Раскройте скобки в выражении: 1) m+(d-f)+n= 2)x-(z+y)= 3)-(-l+s)-(r-g+(-t))= 4)(a-b)-(b+a)= 5) (x+y)-(k+x-z)=

Answer 1

1) m+(d-f)+n=m+d-f+n
2)x-(z+y)=x-z-y
3)-(-l+s)-(r-g+(-t))= l-s-r+g+t
4)(a-b)-(b+a)= a-b-b-a=-2b
5) (x+y)-(k+x-z)=x+y-k-x+z=y-k+z

Answer 2

1) m+d-f+n
2) x-z-y
3) l-s-r+g+t
4) a-b-b-a
5) x+y-k-x+z