Question

-11ab + 6cd from - 10bc+ ab-4cd

Answer 1

-11ab+6cd-(-10bc+ab-4cd)
= -11ab+6cd+10bc-ab+4cd
= -11ab-ab+10bc+6cd+4cd
= -12ab+10cd+10bc


hope this helps u

Answer 2

Answer:

-10bc + ab - 4cd - (-11ab + 6cd)

-10bc + ab - 4cd + 11ab - 6cd

= -10bc+12ab-10cd