bonjour,
Arthur : 10 x - 2
Charlotte : 8 x + 7
10 x - 2 = 8 x + 7
10 x - 8 x = 7 + 2
2 x = 9
x = 9/2
x = 4.5
ils ont choisi 4.5
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bonjour,
Arthur : 10 x - 2
Charlotte : 8 x + 7
10 x - 2 = 8 x + 7
10 x - 8 x = 7 + 2
2 x = 9
x = 9/2
x = 4.5
ils ont choisi 4.5