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Britishone
@Britishone
April 2019
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Salut quelqu'un pourrai m'aider pour les exercices 78 (a-b) ; 80 (a-f) ; 99
je mets 20 POINTS!!!!! merci
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winner123
Verified answer
Bonsoir
a) - 2x -3 < 6x -2
-2x - 6x < -2 +3
-8x < 1
x > -1/8
b) 3 -5 y ≤ 12 + 8y
- 5y - 8y ≤ 12 -3
- 13y ≤ 9
y ≥ - 9/13
a) -5(x +3) < x +12
- 5x - 15 < x +12
- 5x -x < 12 +15
-6x < 27
x > 27/6
f) -1 - (5y -1) < -6 - ( y +12)
-1 - 5y +1 < -6 - y -12
-5y + y < -6-12
- 4y < - 18
y > 18/4 =
y > 9/2
N° 99
x = 7/3
x >2
0 votes
Thanks 1
winner123
bon week end sous le soleil
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Verified answer
Bonsoira) - 2x -3 < 6x -2
-2x - 6x < -2 +3
-8x < 1
x > -1/8
b) 3 -5 y ≤ 12 + 8y
- 5y - 8y ≤ 12 -3
- 13y ≤ 9
y ≥ - 9/13
a) -5(x +3) < x +12
- 5x - 15 < x +12
- 5x -x < 12 +15
-6x < 27
x > 27/6
f) -1 - (5y -1) < -6 - ( y +12)
-1 - 5y +1 < -6 - y -12
-5y + y < -6-12
- 4y < - 18
y > 18/4 = y > 9/2
N° 99
x = 7/3
x >2