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Kellysampaiovitoriago
Respondido

a) (+3/5) + (-7/5) = b) (-3/2)+(5/7​

Resposta :

BoxingPathfindergo

[tex] \frac{3}{5} - \frac{7}{5} = \frac{3 - 7}{5} = - \frac{ 4}{5} . \\ \\ \\ \\ - \frac{3}{2} + \frac{5}{7 } = \frac{ - 21 + 10}{14} = \frac{ - 11}{14} .[/tex]

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