Bonjour,
Calculer:
3x+2-x= 2x+2
7x(3y)= 21xy
3a+4b= 3a+4b
3a+5a-2a+7a= 13 a
6x(2x)= 12x²
12a(5)= 60 a
a(15)= 15 a
4y-y= 3 y
f+f= 2 f
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Bonjour,
Calculer:
3x+2-x= 2x+2
7x(3y)= 21xy
3a+4b= 3a+4b
3a+5a-2a+7a= 13 a
6x(2x)= 12x²
12a(5)= 60 a
a(15)= 15 a
4y-y= 3 y
f+f= 2 f