How does this simpify?

My book says 1011+h−1011h simplifies to −10h11h+121h

But I just can't figure out how they came to that conclusion.

2 Answers
Kat
Sep 3, 2016

How do you get the second equation from the first?

Explanation:

I don't understand how to book gets to −10h11h+121h from the original equation. Why does the numerator of the top of the equation become 10h? Why are both denominators being multiplied by 11 in order to get 11h and 121?

Cesareo R.
Sep 3, 2016

−10(11+h)11

Explanation:

1011+h−1011h=10×11−10(11+h)(11+h)11h=10×11−10×11−10h(11+h)11h=−10(11+h)11

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