bonjour;
Ali: x
Amin: 3x
Omar : 3x-10
x+3x+3x-10 = 60
7x -10 = 60
7x = 60+10
7x = 70
x = 70/7
x= 10
Alix: 10ans
Amin: 30 ans
Omar: 20 ans
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bonjour;
Ali: x
Amin: 3x
Omar : 3x-10
x+3x+3x-10 = 60
7x -10 = 60
7x = 60+10
7x = 70
x = 70/7
x= 10
Alix: 10ans
Amin: 30 ans
Omar: 20 ans