Sagot :
7x-28x-monomial
^
monomial
Combine them if it cannot then let it stay there and it will be come a binomial
7x-28x= (-21x)answer
#2
7x-30
Let is stay
(7x-30) answer
^
monomial
Combine them if it cannot then let it stay there and it will be come a binomial
7x-28x= (-21x)answer
#2
7x-30
Let is stay
(7x-30) answer