Cara brought in yard of blue ribbon to
make her gift. She cuts the ribbon into
3 equal pieces. What is the length of
each piece?
yard

Sanderson is having trouble with his assignment. his shown work is as follows: − 3 7 7 3 = − 3 7 × 7 3 = − 21 21 = −1 however, his answer does not match the answer that his teacher gives him. complete the description of sanderson's mistake. find the correct answer.