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b)-33+44=11
c)-23+(-17)=-40
d)16-60=-44
e)-15-25=-40
f)-30-(-50)=20
g)-3/4+(-3/4)=-6/4=-1 2/4= -1 1/2
h)0,2-0,7=-0,5
i)-0,6-0,4=-1
j)-1-(-4/7)=-3/7
k)5,5-(-0,8)=6,3
l)-0,75+1/4=-0,5
b)-33+44= 11
c)-23+(-17)= - 40
d)16-60= 16 + (-60) = - 44
e)-15-25= -15 + (-25) = - 40
f)-30-(-50)= -30 + 50 = 20
g)-3/4+(-3/4)= -6/4 = -3/2 = -1,5
h)0,2-0,7= 0,2 + (-0,7) = -0,5
i)-0,6-0,4= -0,6 + (-0,4) = - 1
j)-1-(-4/7)= -7/7 + 4/7 = -3/7
k)5,5-(-0,8)= 5,5 + 0,8 = 6,3
l)-0,75+1/4= -0,75 + 0,25 = -0,5