3+67 = 70
d)
[tex] - \frac{9.39}{1} + \frac{0.74}{1} - \frac{10.61}{1} + \frac{3.26}{1} + \frac{6.25}{1} = \\ = - \frac{939}{100} + \frac{74}{100} - \frac{1061}{100} + \frac{326}{100} + \frac{625}{100} = \\ = -\frac{975}{100} = -\frac{9.75}{1} = -9.75[/tex]