Réponses

  • Utilisateur Brainly
2014-03-23T15:49:56+01:00
cacul asticieusement

a)19*43,5+19*56,5
=19*(43,5+56,5)
=19*100
=1900

b)16,7*65-6,7*65
=(16,7-6,7)*65
=10*65
=650

c)13*5,4+8,1*13-3,5*13

=13*(5,4+8,1-3,5)
=13*10
=130
2014-03-23T15:52:59+01:00
B)16.7*69-6.7*69 = 1152.3 - 462.3
                         =690