a) \(85793 - 36841 + 3826 \)
\(= 48952 + 3826 = 52778\);
b) \(\dfrac{84}{100} - \dfrac{29}{100}+ \dfrac{30}{100} \)
\(=\dfrac{55}{100} + \dfrac{30}{100} =\dfrac{85}{100} = \dfrac{17}{20}\) ;
c) \(325,97 + 86,54 + 103,46\)
\(= 412,51 + 103,46 = 515,97\).
