 Luka motango oyo ezangi na molongo oyo: 52, 34, 17, __ .
Motango oyo ezangi na molongo ezali 8,5. Na molongo, motango moko na moko oyo elandi ezwami na kolongolaka 18 na motango ya liboso mpe na sima kokabola mbano na 2. Na yango, kobanda na 52 : 52 - 18 = 34 34 / 2 = 17 17 - 18 = -1 -1 / 2 = - 0,5 mpe bongo na bongo.