SOLUTION: I am really struggling in math and the book is helping alot because it explanes everything with examples and the problem i am trying to do has no example in the book i am hopeing y

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Question 7402: I am really struggling in math and the book is helping alot because it explanes everything with examples and the problem i am trying to do has no example in the book i am hopeing you can help me solve it or will show me a good example.
#110. Find the reciprocal of the number.
-12.1/-0.11
All other questions have fractions but this one dosent.
thank you - Amy
Answer by bonster(299) About Me  (Show Source):
You can put this solution on YOUR website!
When faced with a problem with decimals, put it in fraction form:

-12.1/-0.11

-121%2F10 / -11%2F100

121%2F10/-11%2F100

At this point, you can change the problem from a division to a multiplication problem by using the reciprocal of -11%2F100 which is -100%2F11
121%2F10*-100%2F11

simplify
(11)(-10)
=-110