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Sagot :

Réponse :

A=2*x+(-5*x+40)  

= -3+-5*x+40

 

B=2*x+5+(-1*x+8)

= 2*x+-1*x+5+8  

= 1+-1*x+13

C=(2*x+5)*3

=6*x+15

D=(16*x+40)+-3  

= 16*x+40+-3

= 16*x+40+-3  

E=  

=1*(2*x+-5)+-1*(8+-1*x)

=(2*x+-5)+(1*x+-8)  

=2*x+-5+(1*x+-8)

= 2*x+1*x+-5+-8

= 3+1*x+-13

Explications étape par étape

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