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si vou pouver m aider a faire se calcul littéral merci d avance : a) 1.5+(-5)x2.5+(-5.5)x(-2) b) (13-2.5)x(3-10)+(-5)x(-18)

Sagot :

TILIA

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 .

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