Répondre :
si x=5
G=3(20-2)
G=3*18
G=54
si 4x-2=7
G=3(7)=21
si12x=11
je distribue:(3*4x)+(3*(-2)
donc G=12x-6
G=11-6=5
je reflechis pour la suite
G=3(20-2)
G=3*18
G=54
si 4x-2=7
G=3(7)=21
si12x=11
je distribue:(3*4x)+(3*(-2)
donc G=12x-6
G=11-6=5
je reflechis pour la suite
Sauf erreur, voilà ...
1) x = 5
G = 3 x 18 => G = 54
2) 4 x – 2 = 7
G=3 x 7 => G = 21
3) 12 x = 11
G = 11 – 6 => G = 5
4) 6 x = 5
G = 10 – 6 => G = 4
5) 2 x – 1 = 3
G = 6 x 3 => G = 18
6) 3 x = 25
G = 100 – 6 => G = 94
1) x = 5
G = 3 x 18 => G = 54
2) 4 x – 2 = 7
G=3 x 7 => G = 21
3) 12 x = 11
G = 11 – 6 => G = 5
4) 6 x = 5
G = 10 – 6 => G = 4
5) 2 x – 1 = 3
G = 6 x 3 => G = 18
6) 3 x = 25
G = 100 – 6 => G = 94