👤
Answered

Trouver une écriture plus simple des expressions suivante sachant que : x + y = 3 et x - y = -2

 

A= x-1- (y-2)

 

B= x- (1-y) -2

 

C= (x-1) - (y-2)

 

D= x- (-1-y) -2

Sagot :

FABRICE

A = x - 1 -y + 2 = x - y +1 = -2 + 1 = -1

 

B= x- (1-y) -2 = x - 1 + y - 2 = x + y - 3 = 3 - 3 = 0

 

C= (x-1) - (y-2) = x - 1 - y + 2 = x - y + 1 = -2 + 1 = -1

 

D= x- (-1-y) -2 = x + 1 + y - 2 = x + y -1 = 3 - 1 = 2

Other Questions

© 2024 IDNLearn. All rights reserved.