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Résoudre les équations suivantes :

n + 40 = 2 * 14
40 = 2 * (14 + n)
n+40 = 2 * (14 + n )

Sagot :

CARO67000
1) n + 40 = 2 * 14
n = -40 + 28
n = -12
2) 40 = 2 * (14 + n)
40 = 28 + 2 n
12/2 = n
n = 6
3) n+40 = 2 * (14 + n )
n+40 = 28 + 2n
12 = n