Sagot :
Réponse :
bonjour!
Explications étape par étape :
A:3x5-4-(-3x(-2)-7)
=15 - 4 -( 6-7)
=11-(-1)
=11+1
=12
B:(5-4x2)-(3x8-7)
=(5-8) - (24 -7)
=-3 - 17
=-20
A: 3x5-4-(-3x(-2)-7)
= 15-4-(6-7)
=11-6+7
=5+7
=12
B:(5-4x2)-(3x8-7)
=(5-8)-(24-7)
=(-3)-(17)
=-3-17
=-20
= 15-4-(6-7)
=11-6+7
=5+7
=12
B:(5-4x2)-(3x8-7)
=(5-8)-(24-7)
=(-3)-(17)
=-3-17
=-20