Sanderson is having trouble with his assignment. His shown work is as follows: − 7 9 9 7 = − 7 9 × 9 7 = − 63 63 = −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. He forgot to multiply by the , and instead just multiplied by the that was in the denominator. The answer should look like this: − 7 9 9 7 = − 7 9 × 7 9 =