calculer chaque expression en detaillant les calculs : A = - 5 - 2 x ( - 4 ) + 6 x ( - 3 ) - 8 B = ( - 6 + 21 ) diviser ( 7 - 4 x 3 )
A = - 5 - 2 x ( - 4 ) + 6 x ( - 3 ) - 8
= -5 + 8 - 18 -8
= -23
B = ( - 6 + 21 ) /( 7 - 4 x 3 )
= 15/ (7-12)
= 15 / -5
= -3
A = - 5 - 2 x (-4) + 6 x (- 3) - 8
A = -5 + 8 - 18 - 8
A = -23
B = (- 6 + 21) / (7 - 4 x 3)
B = 15/ (7 - 12)
B = 15 / -5
B = -3
voilà :)