Question

(a-b)+(c-d)-(a+c)=-(b+d)

Answer 1

\(VT=\left(a-b\right)+\left(c-d\right)-\left(a+c\right)=a-b+c-d-a-c=-b-d=-\left(b+d\right)=VP\)

Answer 2

(a-b) + (c-d) - (a+c)= -(b+d)

a-b+c-d-a-c= -b-d

a-a-b+b+c-c-d+d

0-(b-b)+0-(d-d)

0-0+0-0

0

Answer 3

=( a-b)+(c-d)

-(a+c)= a-b+c-d-a

-c=-b-d=-(b+d)

=VP