Bonjour
Calculer :
A=(5/6)^2-8/9
A = 25/36 - 8/9
A = 25/36 - (8 x 4) / (9 x 4)
A = 25/36 - 32/36
A = - 7/36
Résoudre l’équation :
7 + 3x = 12 -x
3x + x = 12 - 7
4x = 5
x = 5/4.
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Bonjour
Calculer :
A=(5/6)^2-8/9
A = 25/36 - 8/9
A = 25/36 - (8 x 4) / (9 x 4)
A = 25/36 - 32/36
A = - 7/36
Résoudre l’équation :
7 + 3x = 12 -x
3x + x = 12 - 7
4x = 5
x = 5/4.