bonjour
a) x - 6 = 5 x + 17
x - 5 x = 17 + 6
- 4 x = 23
x = - 23/4
b) 1 - ( x + 1)/2 = 3 x - 5
1 - ( x + 1) /2 = ( 6 x - 10) / 2
2/2 - ( x + 1) /2 = ( 6 x - 10) / 2
2 - x - 1 = 6 x - 10
- x - 6 x = - 10 - 2 + 1
- 7 x = - 11
x = 11/7
tu fais pareil pour les autres
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bonjour
a) x - 6 = 5 x + 17
x - 5 x = 17 + 6
- 4 x = 23
x = - 23/4
b) 1 - ( x + 1)/2 = 3 x - 5
1 - ( x + 1) /2 = ( 6 x - 10) / 2
2/2 - ( x + 1) /2 = ( 6 x - 10) / 2
2 - x - 1 = 6 x - 10
- x - 6 x = - 10 - 2 + 1
- 7 x = - 11
x = 11/7
tu fais pareil pour les autres