Question

упростить выражения:
5m-7mn+3m-m=
mn-3mnk+4mn=
2ab-ab+5ab=
7ab-5bc-2ab=

Answer 1

=7m-7mn=7m(1-n)
=5mn-3mnk=mn(5-3k)
=7ab-2b=b(7a-2)
=5ab-5bc=5b(a-c)