Question

Решите пж срочно!!!!!

Answer 1

$1) : - 14 + 8 = 8 - 14 = - 6 \ 2) : - 2.7 + 6.4 = 6.4 - 2.7 = 3.7 \ 3) : 16.8 + ( - 9.5) = 16.8 - 9.5 = 7.3 \ 4) : 7.23 + ( - 18.4) = 7.23 - 18.4 = - 11.17 \ 5) : - 9.4 + 9.4 = 9.4 - 9.4 = 0 \ 6) : - 1 + 0.837 = 0.837 - 1 = - 0.163 \ 7) : - frac{ 5}{6} + frac{7}{8} = frac{7}{8} - frac{5}{6} = frac{42}{48} - frac{40}{48} = frac{42}{48} = 0.875 \ 8) : 3 frac{7}{8} + ( - 2 frac{1}{9} ) = frac{31}{8} - frac{19}{9} = frac{279}{72} - frac{152}{72} = frac{127}{ 72} = 1 frac{55}{72} \ 9) : - 6 frac{2}{9} + 2 frac{5}{6} = 2 frac{5}{6} - 6 frac{2}{9} = frac{17}{6} - frac{56}{9} = frac{153}{54} - frac{336}{54} = - frac{183}{54} = 3 frac{21}{54}$