7/8 +0,75 = 1/2 + 20% + 0,4 = 25% + 1 1/2 + 0,7 =

[tex]a. \frac{7}{8} + 0.75 = 0.875 + 0.75 = 1.625[/tex]
[tex]b. \frac{1}{2} + \frac{20}{100} + 0.4 = 0.5 + 0.2 + 0.4 = 1.1[/tex]
[tex]c. \frac{25}{100} + \frac{11}{2} + 0.7 = 0.25 + 5.5 + 0.7 = 6.45[/tex]