Bonjour,
A=15×−43+12
-645 +12 = -633
B=37+(−87)÷(−421)
37 + 0, 207 = 37,07
C=(32+35)(54−34)
67* 20 =1 340
D=−32−54×1
-32 -54 = -86
A=15×(-43)+12
=-645+12
=-633
B=37+(-87)÷(-421)
=37+0,21
=37,21
C=(32+35)(54-34)
=67×20
=1340
D=(-32)-54×1
=(-32)-54
=-86
