avec un bonjour ou un merci, ce serait mieux !
9 x + 7 - 4 x - 1 = 0
5 x = 1 - 7
5 x = - 6
x = - 6/5
6 x - 9 /8 = 4 x + 2
48 x /8 - 9 /8 = 32 x /8 + 16/8
48 x - 32 x = 16 + 9
16 x = 25
x = 25/16
9 x - 9 + x = 7 /3
10 x = 7 /3 + 9
30 x /3 = 7/3 + 27/3
30 x = 34
x = 34/30 = 17/15
3 x - 6 /5 = 7
15 x /5 = 6/5 + 35/5
15 x = 41
x = 41/15
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avec un bonjour ou un merci, ce serait mieux !
9 x + 7 - 4 x - 1 = 0
5 x = 1 - 7
5 x = - 6
x = - 6/5
6 x - 9 /8 = 4 x + 2
48 x /8 - 9 /8 = 32 x /8 + 16/8
48 x - 32 x = 16 + 9
16 x = 25
x = 25/16
9 x - 9 + x = 7 /3
10 x = 7 /3 + 9
30 x /3 = 7/3 + 27/3
30 x = 34
x = 34/30 = 17/15
3 x - 6 /5 = 7
15 x /5 = 6/5 + 35/5
15 x = 41
x = 41/15