УПРОСТИТЕ ВЫРАЖЕНИЕ 1) 5n+7n; 2) 6n+3n+n; 3)9y-3-y

Question

УПРОСТИТЕ ВЫРАЖЕНИЕ 1) 5n+7n; 2) 6n+3n+n; 3)9y-3-y

Answer 1

1)5n+7n=12n
2)6n+3n+n=10n
3)9y-3-y=8y-3

Answer 2

1) 5n+7n= n(5+7)=12n
2) n(6+3+1)=9n
3) 8y-3