(-y-x)-(-y-x) (2m-n)+(n+4m) (p-2q)-(4q+p) -(c+d)+(-c-3d) -(-6x+3y)-(-2x+1)...

Question

(-y-x)-(-y-x)
(2m-n)+(n+4m)
(p-2q)-(4q+p)
-(c+d)+(-c-3d)
-(-6x+3y)-(-2x+1)
упростить/решить
заранее спасибо

Answer 1

1)( -y-x)- (-y -x)=-y-x+y-x=0
2) (2m-n) +(n4m)=6m
3) (p-2q) - (4a+p) = p-2q -4q -p =6q
4)-c -d-c-3d =-2c-4d
5)6x -3y+2x -1=8x -3y +1