Question

​Efetue as operações indicadas, simplificando os resultados quando possivel

Answer 1

a)

$( + \frac{ 4}{3} ) - ( + \frac{7}{4} ) = \frac{16 - 21}{12} = - \frac{ 5}{12}$

b)

$( + \frac{11}{9} ) - ( - \frac{7}{6} ) = \frac{22 + 21}{18} = \frac{43}{18}$

c)

$( + \frac{1}{2} ) + ( - \frac{2}{3} ) = \frac{3 - 4}{6} = - \frac{1}{6}$

d)

$( - \frac{1}{3} ) - ( + \frac{5}{6} ) = \frac{ - 2 - 5}{6} = - \frac{7}{6}$