Bonjour je bloque sur les équations Résoudre les équations ci-dessous 6x-7=8 2x-11=7x+4 6-3x=15+4x 6(x-2)-4x+92=17 3(7-2x)-5(2x+1)=0 Merci

Bonjour

6x - 7 = 8
<=> 6x = 8 + 7
<=> 6x = 15
<=> x = 15 / 6

2x - 11 = 7x + 4
<=> 2x - 7x = 4 + 11
<=> -5x = 15
<=> x = 15 / (-5)
<=> x = -3

6 - 3x = 15 + 4x
<=> -3x - 4x = 15 - 6
<=> -7x = 9
<=> x = 9 / (-7)

6 (x - 2) - 4x + 92 = 17
<=> 6x - 12 - 4x + 92 = 17
<=> 6x - 4x = 17 - 92 + 12
<=> 2x = -63
<=> x = -63 / 2

3 (7 - 2x) - 5 (2x + 1) = 0
<=> 21 - 6x - 10x - 5 = 0
<=> -6x - 10x = -21 + 5
<=> -16x = -16
<=> x = -16 / (-16)
<=> x = 1

Voilà j'espère avoir pu t'aider ^^