Répondre :
A)25-7+12-25+38-45 = -2
B)(-56)*7*25*0*(-45)= 0
C)1.8+(-2.7)-(-2.3)-(+2.8)=1.8-2.7+2.3-2.8= -1.4
D)5*(-3)*(0.5)*(-2)*2=-15*0.5*-4=15*4*0.5= 30
B)(-56)*7*25*0*(-45)= 0
C)1.8+(-2.7)-(-2.3)-(+2.8)=1.8-2.7+2.3-2.8= -1.4
D)5*(-3)*(0.5)*(-2)*2=-15*0.5*-4=15*4*0.5= 30