Question

помогите пожалуйста​

Answer 1

N1.
$- 6.47 + 8.32 + 6.47 + ( - 7.32) = 1 \ 1) - 6.47 + 8.32 = 1.85 \ 2)1.85 + 6.47 = 8.32 \ 3)8.32 + ( - 7.32) = 8.32 - 7.32 = 1$
N2.
$- frac{19}{42} + ( - frac{9}{16} ) + ( - frac{11}{42} ) + frac{5}{16} = - frac{27}{28} \ 1) - frac{19}{42} - frac{9}{16} = - frac{152}{336} - frac{189}{336} = - frac{341}{336} = - 1 frac{5}{336} \ 2) - 1 frac{5}{336} + ( - frac{11}{42} ) = - 1 frac{5}{336} - frac{88}{336} = - 1 frac{93}{336} \ 3) - 1 frac{93}{336} + frac{5}{16} = - 1 frac{93}{336} + frac{105}{336} = - frac{324}{336} = - frac{27}{28}$