Answer:
or

Explanation:
The complete question is
Mrs . Porcelli’s classroom bulletin board is 2/1/4 feet long. Ms .Smith bulletin board is 3 times as long Mrs . Porcelli’s.How long is Ms.Smith’s bulletin board
we know that
To find out how long is Ms.Smith’s bulletin board, multiply Mrs . Porcelli’s bulletin board by 3
so

but first convert mixed number to an improper fraction
so

substitute

convert to mixed number
