Question

from the sum of 3 x - y + n and-y-11, subtracted 3x-y-11

Answer 1

sum is (3x -y +11) + (-y -11)

=(3x-2y)

(3x-2y)- (3x-y-11)

= (-y +11)

Answer 2

3x-y+n+(-y-11)
3x-y+n-y-11
3x-2y+n-11

subtracted
3x-2y+n-11 -3x-y-11
-3y+n-22