Page:The Algebra of Mohammed Ben Musa (1831).djvu/185

 remain four hundred dirhems less three things, equal to twice the legacy, namely, two things and two-thirds. Reduce this, by means of the three things, and you find four hundred, equal to eight things and one-third. Make the equation with this: one thing will be forty eight dirhems.

“Suppose that a man on his sick-bed makes to another a present of a slave-girl, worth three hundred dirhems, her dowry being one hundred dirhems; the donee cohabits with her, and afterwards, being also on his sick-bed, makes a present of her to the donor, and the latter cohabits with her. How much does he acquire by her, and how much is deducted?” Com- But