Question

a)-12+(-15+23)
b) (-7+11)-(-15)
c)-1supra3+1supra2
d)-2supra5-7supra3
e) (-4)•(-15+17)
f) (-2)²•(-7+12)
g) 2pe1supra3-3pe1supra2
h) (-1)la5•(-2³+13)
i) 2supra7+2-4supra3
Vaa rooggg eu mult ajutati-ma

Answer 1

a.-12+9-15+23)=-12+8=-4
b.(-7+11)-(-15)=3+15=18
c.-1/3+1/2=-2+3/totul supra6=1/6(am amplificat)
d.-3/5-7/3=-6-35/totul supra15=-41/15(am amplificat)
e.(-4)x(-15+17)=-4x2=-8
f.(-2la a 20x(-7+12)=4x5=20
g.2/1/3-3/1/2=2x3-3x2=6-6=0
h.(-1)la  a5x(-2 la a3+13)=-1x(-8+13)=-1x5=-5
i.2/7+2-4/3=6+42-28/totul supra21=20/21