1) 1/2-(+4)

2) -5/11-(-5/11)

3) -5-(-2 1/3)

1) 1/2-(+4) = 1/2 - 4 = 1/2 - 8/2 = -7/2 = -3 1/22) -5/11-(-5/11) = -5/11 + 5/11 = 03) -5-(-2 1/3) = -5 + 2 1/3 = -15/3 + 7/3 = -8/3 = -2 2/3

1)-7/2=-3.52)03)-2 2/3