a) -5x + 3 = -3x + 2 b) 3(x + 4) = −(x + 5) + 2
Mathématiques
thomasgiovanni973
Question
a) -5x + 3 = -3x + 2 b) 3(x + 4) = −(x + 5) + 2
1 Réponse
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1. Réponse hirondelle52
Bonsoir,
a) -5x + 3 = -3x + 2
3 -2 = -3x +5x
1 = 2x
2x=1
x= 1/2
x= 0,5
b) 3(x + 4) = −(x + 5) + 2
3x+12 = -x -5 +2
3x+x = -5 +2 -12
4x= -15
x= -15/4
x = -3,75