Sagot :
bonjour
A =3x +5+7x+2x+ 4x + 6
A = 16 x + 11
B = 5x-4+9x-8x+1-7 9
B = 6 x et ensuite 1 - 7 9 ? c'est - 79 ?
C = 8-6x + 2-x-3+9
C = - 7 x + 16
bonjour
A = 3x + 5 + 7x + 2x + 4x + 6
= 3x + 7x + 2x + 4x + 5 + 6
= (3 + 7 + 2 + 4) x + (5 + 6)
= 16 x + 11
réponse :
A = 16x + 11
B = 5x - 4 + 9x - 8x + 1 - 7 9
= 5x + 9x - 8x - 4 + 1 ? ce 79 me semble erroné
= (5 + 9 - 8) x - 4 + 1 + ?
= 6x -3 + ?
C = 8 -6x + 2 - x - 3 + 9
= -6x - x + 8 + 2 - 3 + 9
= (-6 - 1)x + (8 + 2- 3 + 9)
= -7 x + 16