Voici six équations,trouver celle dont le nombre -2 est la solution.

1) 3+ 13b = 8b -7
2) 16a - 20 = 26a
3) 5,5x = 4x + 8

4) 12,5y + 4 = 3y - 15
5) 3x au carré - 6x - 24 = 0
6) 7:2t - 1 =1:4t + 3

Merci c'est pour demain
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