Question

Z+0,4=одна целая две третих

Answer 1

$z + 0.4 = 1 frac{2}{3}$
$z = 1 frac{2}{3} - frac{4}{10}$
$z = 1frac{2}{3} - frac{2}{5}$
$z = 1frac{10}{15} - frac{6}{15}$
$z = 1 frac{4}{15}$