Algebra in Kithab!

Here it's a simple one.

(For another beautiful one click here)


Although it seems no matter, but students in the class of 5,6,7 must like this one (Kithab is considered here only as an Arabic poem)
Take this poem for convince:

قالت: ألا لَيْتَما هذا الحَمامُ لنا

إلى حمامتنا ونصفهُ ، فقدِ

فحسبوهُ ، فألقوهُ ، كما حسبتْ ،

تِسعاً وتِسعينَ لم تَنقُصْ ولم تَزِدِ

فكملت مائةً فيها حمامتٌها

و أسرعت حسبة في ذلك العدد

That, a lady named Zurqa' (زرقاء) in the era of Jahilliyya, looked to a group of flies flying in the sky and said at the moment: "If I were got it and half of it extra and I added it to mine!"

The men around her counted it and wondered for her correctness. It was 66. She liked to have it and half of it to her only one. So it sums to 100.

Algebra in it:

Let the number of flies for it's unknown be x

She liked to have it and half of it to her one so that the sum should be 100

Write it in Algebra:
لَيْتَما هذا الحَمامُ   = X         +

 1=       إلى حمامتنا

ونصفهُ            =X/2

فقدِ               = It's enough (100)

Algebra in It

  

  

              (فكملت مائةً فيها حمامتٌها)

               


               



      

              (تِسعاً وتِسعينَ)