2x-3<-1 4<6-2x 2x+6≥5x-9 11x-4≥3x+10
Mathématiques
inescharif
Question
2x-3<-1
4<6-2x
2x+6≥5x-9
11x-4≥3x+10
4<6-2x
2x+6≥5x-9
11x-4≥3x+10
2 Réponse
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1. Réponse Isomega
1)
2x-3<-1
2x<-1+3
2x<2
x<2/2
x<1
2)
-2x+6>4
-2x>4-6
-2x>-2
2x>2
x>2/2
x>1
3)
6-2x<4
-2x<4-6
-2x<-2
x<2/2
x>1
4)
11x-4>= 3x+10
11x-3x>=4+10
8x>=14
x>=14/8
x>=7/4 -
2. Réponse anno32
Bonsoir
2x - 3 < - 1
2x < -1 + 3
2x < 2
x < 2/2
x < 1
S = ]-oo;1[
4 < 6 - 2x
4 - 6 < -2x
-2 < -2x
x > 1
S = ]1;+oo[
2x+6≥5x-92x - 5x ≥ -9 - 6-3x ≥ -15x ≤ - 5
S = ]-oo;-5]
11x-4≥3x+10 11x - 3x ≥ 10 + 48x ≥ 14x ≥ 14/8x ≥ 7/4
S = [7/4;+oo[