Simplify the following text for a Grade 10 native English-speaking person.
Original: Teodoro Obiang Nguema Mbasogo ( born 5 June 1942 ) is the President of Equatorial Guinea , having served since 1979 , and the Chairperson of the African Union .
Simplified: Teodoro Obiang Nguema Mbasogo ( born June 5 1942 ) has been the President of Equatorial Guinea since 1979 .