bonjour aider moi réduire les expressions aprés avoir enlever les parenthéses A) 3+(x+2) ; b) =4+(x-2) ; d)=(2 x-7)+10 ; e)= 8-(x+3) ; g) =13-(-x+6) ; h

Bonjour,

A) 3+(x+2)= 3 + x + 2 = x + 5

b) =4+(x-2) = 4 + x - 2 = x + 2

d)=(2 x-7)+10 = 2x - 7 + 10 = 2x + 3

e)= 8-(x+3) = 8 - x - 3 = - x + 5

g) =13-(-x+6) = 13 + x - 6 = x + 7

h) -(-3x-5) = 3x + 5

j ) = -(3-2x)-7 = - 3 + 2x + 7 = 2x + 4

k) = -3-(1+x) = - 3 - 1 - x = - x + 4

m)= (-5+3x)+2x = - 5 + 3x + 2x = 5x - 5

n) = -5-(-x-1) = - 5 + x + 1 = x - 4.

bonjour

A = 3 + x + 2 = x + 5

B  = 4 + x- 2 = x + 2

d = 2 x - 7 + 10 = 2 x + 3

e =  8 - x - 3 = - x + 5

g = 13 + x - 6 = x + 7

h = 3 x + 5

j = - 3 + 2 x - 7 = 2 x - 10

k = - 3 - 1 - x = - x - 4

m = - 5 + 3 x + 2 x = 5 x - 5

n = - 5 + x + 1 = x - 4