Bonjour,je suis actuellement en classe de 3ème.Pourriez vous m’aider s’il vous plaît je ne comprends absolument rien aux Équations
Merci de votre aide
Merci de votre aide
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7x = 21
x = 21/7 = 3
-3x = 12
x = -12/3 = - 4
5x - 25 = 0
5x = 25
x = 25/5 = 5
4x - 3 = 6
4x = 6 + 3
x = 9/4
4x + 2 = x + 11
4x - x = 11 - 2
3x = 9
x = 9/3 = 3
3x - 7 = -2x - 9
3x + 2x = - 9 + 7
5x = -2
x = -2/5
4x = 3/5
x = 3/5*1/4 = 3/20
2/3x = 7
x = 7*3/2 = 21/2
6/5x = -7/11
x = -7/11*5/6 = -35/66
-7x = - 4/3
x = 4/3*1/7 = 4/21
-3/2x = 5
x = -5 * 2/3 = -10/3
-5/7x = 2/3
x = -2/3*7/5 = -14/15