Question

вычислите вычитание: 1/2-(+4); -5/11-(-5/11); -5-(-2/1/3); -8-(-1/7); 1/6-(+3); -5/12-(-4).

Answer 1

$frac{1}{2} - ( + 4 )= frac{1}{2} - frac{8}{2} = - frac{7}{2} = - 3.5 \ frac{ - 5}{11} - ( - frac{5}{11} ) = - frac{ 5}{11} + frac{5}{11} = 0 \ - 5 - ( frac{ - 2}{ frac{1}{3} } ) = - 5 -( - 6) = - 5 + 6 = 1 \ - 8 - ( - frac{1}{7} ) = - 8 + frac{1}{7} = frac{ - 56 + 1}{7} = - frac{55}{7} = - 7 frac{6}{7} \ frac{1}{6} - ( + 3) = frac{1 - 18}{6} = - frac{17}{6} = - 2 frac{5}{6} \ - frac{5}{12 } - ( - 4) = frac{ - 5 + 48}{12} = frac{43}{12} = 3 frac{7}{12}$