Réponse :
Explications étape par étape
Bonjour
résolvez ces équations :
6(4-5x)=-5(10+4x)
24 - 30x = -50 - 20x
24 + 50 = 30x - 20x
74 = 10x
x = 74/10
x = 7,4
7-5(2-4x)=-8(-5+3x)
7 - 10 + 20x = 40 - 24x
20x + 24x = 40 - 7 + 10
44x = 43
x = 43/44
3/5(10x+2)=1/4-3/2x
6x + 6/5 = 1/4 - 3/2 x
6x + 3/2 x = 1/4 - 6/5
12/2 x + 3/2 x = 5/20 - 24/20
15/2 x = -19/20
x = -19/20 * 2/15
x = -2/20 * 19/15
x = -1/10 * 19/15
x = -19/150
(-2x+9)/6=(3x-1)/2
2(-2x + 9) = 6(3x - 1)
-4x + 18 = 18x - 6
18 + 6 = 18x + 4x
24 = 22x
x = 24/22
x = (2 * 12)/(2 * 11)
x = 12/11
