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KCHELDA51
Answered

bonjour qui pourrait m'aider sur ça (on doit les simplifier au maximum)
A = 5+(3x+2)
B= 7-(x+3)
C= 3-(z+5)
D= 12x-(2-7x)
E= 5b+ (3-b)
F=9-(-3z-1)
G= 2a-[3a+(-5a+5)]
H=(x-4)-(-3x+x²-1)
merci d'avance ​

Sagot :

MARIEJOSENOUHRA

Réponse:

A=5+(3x+2)

=5+3x+2=7+3x

B=7-(x+3)

=7-x-3=4-x

C=3-(z+5)

=-2-z

D=12x-(2-7x)

=12x-2+7x=19x-2

E=5b+(3-b)

=4b+3

F=9-(3z-1)

=10-3z

G=2a[3a+(-5a+5)]

=2a-3a+5a-5=-a+5a-5=4a-5

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