Answer:
432 characters
Step-by-step explanation:
There are 3 feet in a yard which means there are 36 inches in a yard since one foot is equal to 12 inches. Each inch contains 12 characters so you would multiply 36 by 12 to get 432.
1)-n-5m
2)-13n+10m+6mn
1) (6n-7n)-5m= -n-5m
2)(n-7n-7n)+(2m+2m+6m)+6mn= -13n+10m+6mn