1 - 1/4+1/3+1/12+5/36
= 1 - 9/36+12/36+3/36 +5/36
= 1- 29/36
= 36/36 - 29/36
=7/36
il lui reste donc 7/36 de son temps
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1 - 1/4+1/3+1/12+5/36
= 1 - 9/36+12/36+3/36 +5/36
= 1- 29/36
= 36/36 - 29/36
=7/36
il lui reste donc 7/36 de son temps