Répondre :
a) 1,5+(-5)x2,5+(-5,5)x(-2)
=1.5-12,5+11
= 11-11
=0
b) (13-2,5)x(3-10)+(-5)x(-18)
=10,5x(-7)+90
=-73,5+90
=16.5
Voila .
a) 1.5+(-5)x2.5+(-5.5)x(-2)=1.5+(-12.5)+11=0
b) (13-2.5)x(3-10)+(-5)x(-18)=10.5x(-7)+90=-73.5+90=16.5
SVP aider moi c pour demain calcul littéral : a) 1.5+(-5)x2.5+(-5.5)x(-2) b) (13-2.5)x(3-10)+(-5)x(-18) svp aider moi
a) 1,5+(-5)x2,5+(-5,5)x(-2)
=1.5-12,5+11
= 11-11
=0
b) (13-2,5)x(3-10)+(-5)x(-18)
=10,5x(-7)+90
=-73,5+90
=16.5
Voila .
a) 1.5+(-5)x2.5+(-5.5)x(-2)=1.5+(-12.5)+11=0
b) (13-2.5)x(3-10)+(-5)x(-18)=10.5x(-7)+90=-73.5+90=16.5