Question

10 7/15b - 5 2/3b с решением

Answer 1

$10 \frac{7}{15} b - 5 \frac{2}{3} b = \frac{157}{15} b - \frac{17}{3} b = \frac{157b}{15} - \frac{5 \times 17b}{5 \times 3} = \frac{157b - 85b}{15} = \frac{72b}{15} \: \: sokrashaem \: na \: 3 = \frac{24}{5} b = 4.8b$