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1 vote
Sanderson is having trouble with his assignment. His shown work is as follows:− 8/9 div 9/8 = − 89 × 98 = − 72/72 = −1 v\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
(select)
, and instead just multiplied by the
(select)
that was in the denominator. The answer should look like this:
− 8/9 div 9/8 = - 8/9 × 8/9 =

need this for final exams

User Chenka
by
8.6k points

2 Answers

3 votes
He just didn’t flip the second fraction, he had to use the reciprocal
User Rich Moss
by
8.1k points
1 vote

Answer:

He forgot to flip the second fraction.

Explanation:

He has:

−8/9 ÷ 9/8 = −8/9 × 9/8 = −72/72 = −1

He made a mistake. When you change a division to a multiplication, you must use the reciprocal of the second fraction. You have to flipt the second fraction. He did not flip it.

This is correct:

−8/9 ÷ 9/8 = −8/9 × 8/9 = −64/81

User KSHMR
by
7.6k points