Question

решить удобным способом: 4цел. 2/3 + 1цел.1/3 * 3 - 9цел.1/6

Answer 1

$4frac{2}{3} + 3*1frac{1}{3}- 9frac{1}{6} =$
$= frac{4*3 + 2 + 3(1*3+1)}{3}- frac{9*6+1}{6} =$
$= frac{12 + 2 + 12}{3}- frac{55}{6} =$
$= frac{26}{3}- frac{55}{6} =$
$= frac{26*2}{6}- frac{55}{6} =$
$= frac{52}{6}- frac{55}{6} =$
$= frac{52-55}{6} = frac{-3}{6} =frac{-1}{2} = -0.5$