Réponses

2014-10-14T18:58:49+02:00
5 x ( 8 x 2 - 1 - 2.5 + 5.1 / 9.7 - 5.9 ) - 63 : 9 
= 5 x ( 16 - 1 - 383 / 194 - 5,9 ) - 7
= 5 x ( 15 - 3 819 / 485 ) - 7
= 5 x 3 456 / 485 - 7
= 3 456 / 485 - 7
= 2 777 / 97
2014-10-14T19:00:15+02:00
5x(16-3,5+5,1/9,7-5,9)-7
5x(16-9,4+5,1/9,7)-7
5x(6,6x9,7/9,7+5,1/9,7)-7
5x(64,02/9,7+5,1/9,7)-7
5x(69,12/9,7)-7
345,6/9,7-67,9/9,7
277,7/9,7=2777/97=28,63