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This prediction base on mathematics practice that available from oke.or.id, written by Syaiful Hamzah Nasution, consist of four document, each document is prediction test soal UN from 2009 untul 2011, i thik this prediction still relevant until 2011, write base on SKL (standard kompetensi lulusan).some test about algebra * Real Numbers * Linear Equations * Systems of Equations *